thermosetting polymers have been widely used in various industrial applications as adhesives, coatings and laminated materials, among others. More recently, bisphenol A (BPA) have been banned as a raw material polymer product, because the harmful effects on human health. On the other hand, the use of aromatic amines as curing agents confer the properties of heat resistance, mechanical and fire very well for the final product, even though they are toxic and are subject to government restrictions. In this context, diepoxy monomer anhydride derived sugar and green represent a sustainable alternative to BPA and aromatic amines. Here, we report the “in-situ” sol-gel synthesis, using as a precursor tetraethylorthosilicate (TEOS) and aminopropyl triethoxysilane (APTS) to obtain bio-based epoxy / silica composite;
The first step, APTS is left to react with 2,5-bis [(oxyran-2-ylmethoxy) methyl] furan (BOMF) or diglycidyl ether of bisphenol A (DGEBA) monomer, and the resulting silica particles in epoxy in a second step ; The second system nadic cured with methyl anhydride (MNA). composite morphology investigation through a transmission electron microscope (TEM) showed that the hybrid strategy enables excellent distribution of silica nanoparticles (at the nanometric level) to be achieved in a hybrid network structure for the second diepoxy monomer. Regarding the behavior of the fire, as assessed in a vertical flame spread test, the use of preservatives prevented anhydride melt dripping phenomenon and provide high char-forming character to the bio-based epoxy systems and analog phenyl them.
In addition, forced combustion tests showed that the use of anhydride hardener is not the result of an aliphatic polyamine remarkable decline of the rate of heat release. An overall decline of smoke parameters, which is highly desirable in the context of a larger fire safety observed in the case of system BOMF / MNA. The experimental results show that the effect of silica nanoparticles on the fire behavior seems to be related to the level of their dispersion.
methacrylate perspective in the current dental practices
Objective: To provide a current perspective on the sensitivity of dental personnel with methacrylate materials.
Overview: Methacrylate related sensitivities and allergies today goes beyond traditional thinking about denture base resins and materials while methyl methacrylate. Methacrylate now ubiquitous in the current dental practice and dental personnel should be aware that dental adhesives contain potent sensitizer may also be cross-sensitization to methacrylates individuals did not experience. Sensitivity grow to 2-hydroxyethyl methacrylate (HEMA) has described an epidemic in nature because the industry of artificial nails with dental patients and dental personnel may be more susceptible to tooth methacrylate sensitization.
While contact dermatitis remains the most common clinical presentation related methacrylate, respiratory complications and asthma increase is associated with exposure to methacrylates. While additional personal protective equipment (PPE) is expected to be the first protective choice, the National Institute for Occupational Safety and Health (NIOSH) considers the overall PPE largely ineffective and should be considered only as a last resort.
Conclusion: Dental personnel must be aware of the source of methacrylate and control measures limit the use of workplace exposure to second methacrylate dental personnel and patients.
 EOSIN METHYLENE BLUE AGAR |
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| E05-102-500g | Alphabiosciences | 500 g | EUR 108 |
 EOSIN METHYLENE BLUE AGAR,LEVINE |
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| E05-103-10kg | Alphabiosciences | 10 kg | EUR 1035 |
EOSIN METHYLENE BLUE AGAR,LEVINE |
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| E05-103-2kg | Alphabiosciences | 2kg | EUR 264 |
EOSIN METHYLENE BLUE AGAR,LEVINE |
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| E05-103-500g | Alphabiosciences | 500 g | EUR 108 |
 ETHYL VIOLET AZIDE BROTH |
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| E05-105-10kg | Alphabiosciences | 10 kg | EUR 1302 |
ETHYL VIOLET AZIDE BROTH |
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| E05-105-2kg | Alphabiosciences | 2kg | EUR 322 |
ETHYL VIOLET AZIDE BROTH |
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| E05-105-500g | Alphabiosciences | 500 g | EUR 124 |
 EUGONIC AGAR |
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| E05-106-10kg | Alphabiosciences | 10 kg | Ask for price |
EUGONIC AGAR |
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| E05-106-2Kg | Alphabiosciences | 2 Kg | Ask for price |
EUGONIC AGAR |
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| E05-106-500g | Alphabiosciences | 500 g | Ask for price |
 ENDO AGAR |
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| E05-110-10kg | Alphabiosciences | 10 kg | EUR 2381 |
ENDO AGAR |
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| E05-110-2Kg | Alphabiosciences | 2 Kg | EUR 557 |
ENDO AGAR |
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| E05-110-500g | Alphabiosciences | 500 g | EUR 188 |
 APT AGAR |
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| A01-101-10kg | Alphabiosciences | 10 kg | EUR 1173 |
APT AGAR |
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| A01-101-2Kg | Alphabiosciences | 2 Kg | EUR 294 |
APT AGAR |
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| A01-101-500g | Alphabiosciences | 500 g | EUR 116 |
 AGAR, BACTERIOLOGICAL |
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| A01-102-10kg | Alphabiosciences | 10 kg | EUR 1684 |
AGAR, BACTERIOLOGICAL |
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| A01-102-2kg | Alphabiosciences | 2kg | EUR 405 |
AGAR, BACTERIOLOGICAL |
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| A01-102-500g | Alphabiosciences | 500 g | EUR 146 |
 AGAR, HIGH GEL |
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| A01-102IHG-10kg | Alphabiosciences | 10 kg | EUR 2219 |
AGAR, HIGH GEL |
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| A01-102IHG-2Kg | Alphabiosciences | 2 Kg | EUR 521 |
AGAR, HIGH GEL |
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| A01-102IHG-500g | Alphabiosciences | 500 g | EUR 178 |
 AGAR,NOBLE |
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| A01-102N-10kg | Alphabiosciences | 10 kg | EUR 3910 |
AGAR,NOBLE |
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| A01-102N-2kg | Alphabiosciences | 2kg | EUR 889 |
AGAR,NOBLE |
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| A01-102N-500g | Alphabiosciences | 500 g | EUR 278 |
 ALT. THIOGLYCOLLATE MED. |
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| A01-103-10kg | Alphabiosciences | 10 kg | Ask for price |
ALT. THIOGLYCOLLATE MED. |
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| A01-103-2Kg | Alphabiosciences | 2 Kg | Ask for price |
ALT. THIOGLYCOLLATE MED. |
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| A01-103-500g | Alphabiosciences | 500 g | Ask for price |
 AMIES BROTH WITH CHARCOAL |
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| A01-104-10kg | Alphabiosciences | 10 kg | Ask for price |
AMIES BROTH WITH CHARCOAL |
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| A01-104-2kg | Alphabiosciences | 2kg | Ask for price |
AMIES BROTH WITH CHARCOAL |
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| A01-104-500g | Alphabiosciences | 500 g | Ask for price |
 AMIES BROTH W/O CHARCOAL |
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| A01-105-10kg | Alphabiosciences | 10 kg | Ask for price |
AMIES BROTH W/O CHARCOAL |
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| A01-105-2Kg | Alphabiosciences | 2 Kg | Ask for price |
AMIES BROTH W/O CHARCOAL |
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| A01-105-500g | Alphabiosciences | 500 g | Ask for price |
 AZIDE BLOOD AGAR BASE |
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| A01-113-10kg | Alphabiosciences | 10 kg | EUR 2532 |
AZIDE BLOOD AGAR BASE |
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| A01-113-2kg | Alphabiosciences | 2kg | EUR 589 |
AZIDE BLOOD AGAR BASE |
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| A01-113-500g | Alphabiosciences | 500 g | EUR 197 |
 AZIDE DEXTROSE BROTH |
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| A01-114-10kg | Alphabiosciences | 10 kg | EUR 868 |
AZIDE DEXTROSE BROTH |
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| A01-114-2Kg | Alphabiosciences | 2 Kg | EUR 228 |
AZIDE DEXTROSE BROTH |
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| A01-114-500g | Alphabiosciences | 500 g | EUR 98 |
 ANAEROBIC AGAR |
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| A01-115-10kg | Alphabiosciences | 10 kg | EUR 2556 |
ANAEROBIC AGAR |
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| A01-115-2kg | Alphabiosciences | 2kg | EUR 595 |
ANAEROBIC AGAR |
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| A01-115-500g | Alphabiosciences | 500 g | EUR 198 |
 A-1 MEDIUM |
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| A01-116-10kg | Alphabiosciences | 10 kg | EUR 1034 |
A-1 MEDIUM |
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| A01-116-2Kg | Alphabiosciences | 2 Kg | EUR 264 |
A-1 MEDIUM |
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| A01-116-500g | Alphabiosciences | 500 g | EUR 108 |
 AGAROSE 25G-125G -500G |
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| A01-118-10kg | Alphabiosciences | 10 kg | Ask for price |
AGAROSE 25G-125G -500G |
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| A01-118-2kg | Alphabiosciences | 2kg | Ask for price |
AGAROSE 25G-125G -500G |
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| A01-118-500g | Alphabiosciences | 500 g | EUR 494 |
 IL-2 Receptor ?, Human Recombinant |
|||
| 7100-10 | Biovision | EUR 196 | |
IL-2 Receptor ?, Human Recombinant |
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| 7100-50 | Biovision | EUR 637 | |
 Human CellExp? IL-4 R?, Human Recombinant |
|||
| 7101-10 | Biovision | EUR 229 | |
Human CellExp? IL-4 R?, Human Recombinant |
|||
| 7101-50 | Biovision | EUR 881 | |
 Human CellExp? IL-6 R?, Human Recombinant |
|||
| 7102-10 | Biovision | EUR 207 | |
Human CellExp? IL-6 R?, Human Recombinant |
|||
| 7102-50 | Biovision | EUR 800 | |
 IL-9, Rat Recombinant |
|||
| 7103-10 | Biovision | EUR 278 | |
IL-9, Rat Recombinant |
|||
| 7103-50 | Biovision | EUR 1132 | |
 IL-12p80, Human Recombinant |
|||
| 7104-10 | Biovision | EUR 392 | |
IL-12p80, Human Recombinant |
|||
| 7104-50 | Biovision | EUR 1675 | |
 IL-17A, Mouse Recombinant |
|||
| 7105-10 | Biovision | EUR 196 | |
IL-17A, Mouse Recombinant |
|||
| 7105-50 | Biovision | EUR 675 | |
 IL-17B, Human Recombinant |
|||
| 7106-10 | Biovision | EUR 196 | |
IL-17B, Human Recombinant |
|||
| 7106-50 | Biovision | EUR 675 | |
 IL-17D, Human Recombinant |
|||
| 7107-10 | Biovision | EUR 196 | |
IL-17D, Human Recombinant |
|||
| 7107-50 | Biovision | EUR 675 | |
 Human CellExp? IL-34, Human Recombinant |
|||
| 7108-10 | Biovision | EUR 278 | |
Human CellExp? IL-34, Human Recombinant |
|||
| 7108-50 | Biovision | EUR 1132 | |
 IL-36RA, Human Recombinant |
|||
| 7109-10 | Biovision | EUR 196 | |
IL-36RA, Human Recombinant |
|||
| 7109-50 | Biovision | EUR 675 | |
 IL-36?, Human Recombinant |
|||
| 7110-10 | Biovision | EUR 278 | |
IL-36?, Human Recombinant |
|||
| 7110-50 | Biovision | EUR 1132 | |
IL-36?, Human Recombinant |
|||
| 7111-10 | Biovision | EUR 278 | |
IL-36?, Human Recombinant |
|||
| 7111-50 | Biovision | EUR 1132 | |
 Activin B, Human Recombinant |
|||
| 7112-10 | Biovision | EUR 479 | |
Activin B, Human Recombinant |
|||
| 7112-50 | Biovision | EUR 2094 | |
 AITRL, Human Recombinant |
|||
| 7113-10 | Biovision | EUR 251 | |
AITRL, Human Recombinant |
|||
| 7113-50 | Biovision | EUR 936 | |
 Amphiregulin, Human Recombinant |
|||
| 7114-10 | Biovision | EUR 147 | |
Amphiregulin, Human Recombinant |
|||
| 7114-50 | Biovision | EUR 376 | |
 ANG-1, Human Recombinant |
|||
| 7115-10 | Biovision | EUR 251 | |
ANG-1, Human Recombinant |
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| 7115-50 | Biovision | EUR 936 | |
 ANG-2, Human Recombinant |
|||
| 7116-10 | Biovision | EUR 251 | |
ANG-2, Human Recombinant |
|||
| 7116-50 | Biovision | EUR 936 | |
 APRIL, Human Recombinant |
|||
| 7117-10 | Biovision | EUR 311 | |
APRIL, Human Recombinant |
|||
| 7117-50 | Biovision | EUR 1300 | |
 APRIL, Mouse Recombinant |
|||
| 7118-10 | Biovision | EUR 196 | |
APRIL, Mouse Recombinant |
|||
| 7118-50 | Biovision | EUR 675 | |
 Betacellulin, Murine Recombinant |
|||
| 7119-10 | Biovision | EUR 196 | |
Betacellulin, Murine Recombinant |
|||
| 7119-50 | Biovision | EUR 675 | |
 Cardiotrophin-1, Murine Recombinant |
|||
| 7121-10 | Biovision | EUR 278 | |
Cardiotrophin-1, Murine Recombinant |
|||
| 7121-50 | Biovision | EUR 1132 | |
 sCD100/Semaphorin-4D, Human Recombinant |
|||
| 7126-10 | Biovision | EUR 251 | |
sCD100/Semaphorin-4D, Human Recombinant |
|||
| 7126-50 | Biovision | EUR 936 | |
 CTGFL/WISP-2, Human Recombinant |
|||
| 7129-10 | Biovision | EUR 234 | |
CTGFL/WISP-2, Human Recombinant |
|||
| 7129-50 | Biovision | EUR 860 | |
 Human CellExp? DKK-1, Human Recombinant |
|||
| 7132-10 | Biovision | EUR 278 | |
Human CellExp? DKK-1, Human Recombinant |
|||
| 7132-50 | Biovision | EUR 1132 | |
 Human CellExp? sDLL-1, Human Recombinant |
|||
| 7133-10 | Biovision | EUR 207 | |
Human CellExp? sDLL-1, Human Recombinant |
|||
| 7133-50 | Biovision | EUR 675 | |
 Human CellExp? sDLL-4, Human Recombinant |
|||
| 7134-10 | Biovision | EUR 207 | |
Human CellExp? sDLL-4, Human Recombinant |
|||
| 7134-50 | Biovision | EUR 675 | |
 Eotaxin-2/CCL24, murine recombinant |
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| 7137-10 | Biovision | EUR 207 | |
Eotaxin-2/CCL24, murine recombinant |
|||
| 7137-50 | Biovision | EUR 675 | |
 Eotaxin-3/CCL26, human recombinant |
|||
| 7138-10 | Biovision | EUR 207 | |
Eotaxin-3/CCL26, human recombinant |
|||
| 7138-50 | Biovision | EUR 675 | |
 Human CellExp? Fetuin A/ASHG, Human Recombinant |
|||
| 7142-10 | Biovision | EUR 153 | |
Human CellExp? Fetuin A/ASHG, Human Recombinant |
|||
| 7142-50 | Biovision | EUR 381 | |
 Histone H3 Peptide, biotin conjugate |
|||
| 7143-01 | Biovision | EUR 240 | |
Histone H3 Peptide, biotin conjugate |
|||
| 7143-1 | Biovision | EUR 1132 | |
 Histone H4 Peptide, tetra-acetylated, biotin conjugate |
|||
| 7144-01 | Biovision | EUR 240 | |
Histone H4 Peptide, tetra-acetylated, biotin conjugate |
|||
| 7144-1 | Biovision | EUR 1132 | |
 FGF-5, human recombinant |
|||
| 7147-10 | Biovision | EUR 142 | |
FGF-5, human recombinant |
|||
| 7147-50 | Biovision | EUR 359 | |
 FGF-6, human recombinant |
|||
| 7148-10 | Biovision | EUR 207 | |
FGF-6, human recombinant |
|||
| 7148-50 | Biovision | EUR 675 | |
 FGF-16, human recombinant |
|||
| 7149-10 | Biovision | EUR 207 | |
FGF-16, human recombinant |
|||
| 7149-50 | Biovision | EUR 675 | |
 FGF-17, human recombinant |
|||
| 7150-10 | Biovision | EUR 207 | |
FGF-17, human recombinant |
|||
| 7150-50 | Biovision | EUR 675 | |
 FGF-23, human recombinant |
|||
| 7151-10 | Biovision | EUR 229 | |
FGF-23, human recombinant |
|||
| 7151-50 | Biovision | EUR 860 | |
 GASP-1, human recombinant |
|||
| 7152-10 | Biovision | EUR 229 | |
GASP-1, human recombinant |
|||
| 7152-50 | Biovision | EUR 833 | |
, human recombinant) GCP-2 (CXCL6), human recombinant |
|||
| 7153-10 | Biovision | EUR 207 | |
GCP-2 (CXCL6), human recombinant |
|||
| 7153-50 | Biovision | EUR 675 | |
 BMP-9/GDF-2, human recombinant |
|||
| 7154-10 | Biovision | EUR 278 | |
BMP-9/GDF-2, human recombinant |
|||
| 7154-50 | Biovision | EUR 1132 | |
 BMP-11/GDF-11, human recombinant |
|||
| 7155-10 | Biovision | EUR 240 | |
BMP-11/GDF-11, human recombinant |
|||
| 7155-50 | Biovision | EUR 860 | |
 Gremlin-1, human recombinant |
|||
| 7159-10 | Biovision | EUR 142 | |
Gremlin-1, human recombinant |
|||
| 7159-50 | Biovision | EUR 359 | |
 ICAM-1, human recombinant |
|||
| 7161-10 | Biovision | EUR 142 | |
ICAM-1, human recombinant |
|||
| 7161-50 | Biovision | EUR 359 | |
 IFN-?1, human recombinant |
|||
| 7162-10 | Biovision | EUR 207 | |
IFN-?1, human recombinant |
|||
| 7162-50 | Biovision | EUR 735 | |
 IFN-?2, human recombinant |
|||
| 7163-10 | Biovision | EUR 207 | |
IFN-?2, human recombinant |
|||
| 7163-50 | Biovision | EUR 675 | |
 IGF-BP2, human recombinant |
|||
| 7165-10 | Biovision | EUR 251 | |
IGF-BP2, human recombinant |
|||
| 7165-50 | Biovision | EUR 936 | |
 IGF-BP4, human recombinant |
|||
| 7166-10 | Biovision | EUR 251 | |
IGF-BP4, human recombinant |
|||
| 7166-50 | Biovision | EUR 936 | |
 IGF-BP7, human recombinant |
|||
| 7167-10 | Biovision | EUR 207 | |
IGF-BP7, human recombinant |
|||
| 7167-50 | Biovision | EUR 675 | |
 MCP-5/CCL12, murine recombinant |
|||
| 7168-10 | Biovision | EUR 207 | |
MCP-5/CCL12, murine recombinant |
|||
| 7168-50 | Biovision | EUR 675 | |
 MIP-1?/CCL3, human recombinant |
|||
| 7173-10 | Biovision | EUR 207 | |
MIP-1?/CCL3, human recombinant |
|||
| 7173-50 | Biovision | EUR 675 | |
 MIP-1?/CCL9/10, murine recombinant |
|||
| 7174-10 | Biovision | EUR 207 | |
MIP-1?/CCL9/10, murine recombinant |
|||
| 7174-50 | Biovision | EUR 675 | |
 MIP-3/CCL23, human recombinant |
|||
| 7175-10 | Biovision | EUR 207 | |
MIP-3/CCL23, human recombinant |
|||
| 7175-50 | Biovision | EUR 675 | |
 Nesfatin-1, human recombinant |
|||
| 7178-10 | Biovision | EUR 137 | |
Nesfatin-1, human recombinant |
|||
| 7178-50 | Biovision | EUR 272 | |
 Human CellExp? PECAM-1, Human Recombinant |
|||
| 7184-10 | Biovision | EUR 153 | |
Human CellExp? PECAM-1, Human Recombinant |
|||
| 7184-50 | Biovision | EUR 381 | |
 PF-4/CXCL4, murine recombinant |
|||
| 7187-10 | Biovision | EUR 207 | |
PF-4/CXCL4, murine recombinant |
|||
| 7187-50 | Biovision | EUR 675 | |
 R-Spondin-1, human recombinant |
|||
| 7189-10 | Biovision | EUR 207 | |
R-Spondin-1, human recombinant |
|||
| 7189-50 | Biovision | EUR 675 | |
 R-Spondin-2, human recombinant |
|||
| 7190-10 | Biovision | EUR 207 | |
R-Spondin-2, human recombinant |
|||
| 7190-50 | Biovision | EUR 675 | |
 R-Spondin-3, human recombinant |
|||
| 7191-10 | Biovision | EUR 207 | |
R-Spondin-3, human recombinant |
|||
| 7191-50 | Biovision | EUR 675 | |
 Relaxin-2, human recombinant |
|||
| 7194-10 | Biovision | EUR 207 | |
Relaxin-2, human recombinant |
|||
| 7194-50 | Biovision | EUR 675 | |
 Relaxin-3, human recombinant |
|||
| 7195-10 | Biovision | EUR 207 | |
Relaxin-3, human recombinant |
|||
| 7195-50 | Biovision | EUR 675 | |
 SDF-1?/CXCL2, rat recombinant |
|||
| 7199-10 | Biovision | EUR 207 | |
SDF-1?/CXCL2, rat recombinant |
|||
| 7199-50 | Biovision | EUR 675 | |
SDF-1?/CXCL2, rat recombinant |
|||
| 7200-10 | Biovision | EUR 207 | |
SDF-1?/CXCL2, rat recombinant |
|||
| 7200-50 | Biovision | EUR 675 | |
 Semaphorin 3A, human recombinant |
|||
| 7201-10 | Biovision | EUR 207 | |
Semaphorin 3A, human recombinant |
|||
| 7201-50 | Biovision | EUR 675 | |
 sTRAIL Receptor-1/DR4, human recombinant |
|||
| 7206-10 | Biovision | EUR 153 | |
sTRAIL Receptor-1/DR4, human recombinant |
|||
| 7206-50 | Biovision | EUR 381 | |
 VAP-1, human recombinant |
|||
| 7210-10 | Biovision | EUR 321 | |
VAP-1, human recombinant |
|||
| 7210-50 | Biovision | EUR 1186 | |
 Human CellExp? VCAM-1, Human Recombinant |
|||
| 7211-10 | Biovision | EUR 142 | |
Human CellExp? VCAM-1, Human Recombinant |
|||
| 7211-50 | Biovision | EUR 381 | |
 TAFA-2, human recombinant |
|||
| 7213-10 | Biovision | EUR 207 | |
TAFA-2, human recombinant |
|||
| 7213-50 | Biovision | EUR 675 | |
 Thymosin-?4, human recombinant |
|||
| 7216-10 | Biovision | EUR 131 | |
Thymosin-?4, human recombinant |
|||
| 7216-50 | Biovision | EUR 272 | |
 TL-1A, human recombinant |
|||
| 7219-10 | Biovision | EUR 207 | |
Clinical significance: Sensitization to material workplace methacrylate is a major concern grows teeth and dental personnel should be aware of both the content of methacrylic current materials and products that contain ingredients with the most potential for sensitization.