PVC (polyvinyl chloride) nontoxic plasticizer - ZhangJia Gang
Here are eight kinds of PVC (polyvinyl chloride) nontoxic plasticizers for you. 1. Citrate plasticizers are the most commonly used plasticizers with TBC (three butyl citrate) and ATBC (acetyl citrate three butyl ester). The former is made from citric acid and n-butanol, and the latter is made from citric acid, n-butanol and acetic anhydride.
Highly branched and nontoxic plasticizers based on natural
Almost 80% of plasticizers used in polyvinyl chloride (PVC) materials are toxic o-phenyl plasticizers. In order to replace o-phenyl plasticizers in PVC materials, a series of highly branched and nontoxic plasticizers (CHE-4,CHE-8 and CHE-12) based on natural cashew shell oil (CNSL), an agricultural and forestry residue, were synthesized via facile one-pot solvent-free synthesis.
Home | Laboratory of Advanced Polymers and Optimized Materials
Home | Laboratory of Advanced Polymers and Optimized Materials
Epoxy plasticizer.
The product is one of the most widely used polyvinyl chloride nontoxic plasticizers and stabilizers: good compatibility with PVC resin, low volatility and small mobility. It has excellent thermal stability and light stability, water resistance and oil resistance.
Polyvinyl chloride
0.04–0.4. Dielectric Breakdown Voltage. 40 MV/m. Polyvinyl chloride (alternatively: poly (vinyl chloride), [6] [7] colloquial: polyvinyl, or simply vinyl; [8] abbreviated: PVC) is the world's third-most widely produced synthetic polymer of plastic (after polyethylene and polypropylene ). [9] About 40 million tons of PVC are produced each year.
- Does a plasticizer lower the Tg of PVC?
- Since the purpose of a plasticizer is to increase the chain mobility, Tg has been demonstrated to be a good indicator of the polymer structure and eficacy. We showed that DEHP lowers the Tg of PVC by almost 100 K, from between 350 and 400 K to between 250 and 300 K. DBS and DHS were the only other plasticizers able to lower the Tg Figure 3.
- How many monomers are in a PVC plasticizer?
- Considering commercial PVC varies greatly but generally has an atactic stereochemistry, we chose a system consisting of 16 atactic-PVC chains with 20 monomers each. This system, along with the plasticizer of choice, was loaded into the “Disordered System Builder”.
- Are DBS and DHS a good plasticizer for PVC?
- Where data was available, the results from this study are in good agreement with the experiment; we conclude that DBS and DHS are most promising green plasticizers for PVC, since they have properties comparable to DEHP but not the environmental and toxicity concerns.
- Why do benzyl groups fail to plasticize PVC?
- This apparent lack of plasticization was also observed in an experimental study conducted by Erythropel et al.26 One proposed hypothesis to explain this anomaly is that the stacking of the two benzyl groups along with 1,4-BDB spacer components caused rapid partial crystallization within the blend, therefore losing its ability to plasticize PVC.
- Does a plasticizer Difusion coeficient in PVC?
- In contrast, our study examines directly the difusion of a plasticizer within the PVC. The Kim et al.60 experimental study found the difusion coeficient of PVC plasticized with 40 wt % DEHP at 40 °C to be 4.77 × 10−10 or 5.75 × 10−10 m2/s depending on the solvent in which the PVC was submerged.
- Does adding a plasticizer increase the free volume of polymer chains?
- Adding a plasticizer, increases the free volume available by enabling increased motions in the polymer chains thus lowering the Tg.
