Plasticizers - Walters - - Major Reference Works - Wiley Online Library
The article contains sections titled: 1 Introduction 1.1 Definition 1.2 Types of Plasticization 1.3 Types of Plasticizer 2 Plasticizers in Common Use 2.1. Ortho-Phthalate Esters 2.2 Terephthala...
Research progress of novel bio-based plasticizers and their
Abstract Plasticized polyvinyl chloride (PVC) has been widely used in the world. Petroleum-based plasticizers especially phthalates have been the most common plasticizers used in PVC. However, the global petroleum resources are becoming scarce gradually, and the hygienic requirements for plasticizers are increasing. Owing to the negative impact of petroleum-based plasticizers on human health
Plasticizer
Ortho-phthalate esters have traditionally been the most dominant plasticizers, but regulatory concerns have led to the move away from classified substances to non-classified which includes high molecular weight ortho-phthalates and other plasticisers, especially in Europe. Antiplasticizers [ edit]
Preparation and properties of plasticized chitosan/starch
Zhang et al. have studied the high plasticizing efficiency of CaCl 2 on starch/PVA and proved that the CaCl 2 /glycerol complex was the ideal plasticizer for starch/PVA [24, 25]. The results of Abbott et al. showed that the incorporation of a quaternary ammonium chloride halide choline with urea into starch would lead to a stronger, more flexible thermoplastic than simple containing only urea
MECHANISMS OF PLASTICIZERS ACTION | Request PDF - ResearchGate
According to the mechanisms of action of plasticizers [41], both the "attractive forces to function" from lubricity theory and the "solvationdesolvation/aggregation-disaggregation" model from gel...
- Which plasticizer is used to plasticize PVA resin with a DP of 2400?
- In this study, two types of frequently used plasticizers, glycerol (GLY) and diethanolamine (DEA), are chosen to plasticize PVA resin with a DP of 2400. Both PVA/plasticizer films possess excellent optical transmittance and mechanical ductility, whereas the films blended with DEA exhibit higher strength than the PVA/GLY films.
- What are the mechanisms of action of plasticizers?
- According to the mechanisms of action of plasticizers , both the "attractive forces to function" from lubricity theory and the "solvationdesolvation/aggregation-disaggregation" model from gel theory match the function of DEP in this AZO-loaded thermo-responsive NPs system.
- How do plasticizers affect lubricity?
- Plasticizer molecules swell the gel and facilitate the movement of polymer molecules, thus imparting flexibility. The lubricity and gel theories agree that plasticisers penetrate the structure of the polymer, separating chains and thus reducing intermolecular forces between them .
- Can glycerol and diethanolamine be used to plasticize PVA resin?
- Optimization the plasticizing conditions is one means of addressing this issue. In this study, two types of frequently used plasticizers, glycerol (GLY) and diethanolamine (DEA), are chosen to plasticize PVA resin with a DP of 2400.
- What are the theories of plasticization?
- Many such e orts were limited to certain types of plasticizers and individual MDPs -e.g., Wypych 37 Major theories for plasticization include the lubricity theory 40 , gel theory 41 , and free-volume theory 42 . These theories are all phenomenological in nature and also lack molecular details. ... ...
- Why do polymers need plasticizers?
- The addition of plasticizers is known to decrease the viscosity of a polymer, a tool to facilitate molecular movements and inherently increase stochastic chemical interactions and chemical reaction rates, and plasticizers can therefore be added to control the chemical reactivity of molten polymers or of polymers in solution . ... ...
