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Monomeric Plasticizers - Handbook of Vinyl Formulating - Wiley Online
Summary This chapter contains sections titled: Introduction Mechanism of Plasticization Plasticizer Classification Plasticizer Performance Comparisons Application Areas Future of Plasticizers Refer...
Plasticizers: Types, Uses, Classification, Selection & Regulation
Plasticizers increase the flow and thermoplasticity of a polymer by decreasing the viscosity of the polymer melt, the glass transition temperature (Tg), the melting temperature (Tm) and the elastic modulus of the finished product without altering the fundamental chemical character of the plasticized material.
Long- and short-term stability of plasticized poly(lactic acid
The monomeric plasticizer 1,4-butanediol levulinate decreased the glass-transition temperature of PLA from 59 to 16 °C and increased the strain at break substantially from 6 to 227% with 20 wt
Monomeric Plasticizers - ResearchGate
Generally, these plasticizers are esters, in a molecular weight range of 300-600, having a low vapor pressure, and good heat stability"). ... ... DEHA performs well in this application due to...
- What is a monomeric plasticizer?
- Monomeric plasticizers are those products that can be represented by a single, often unique structure. Generally, these are higher boiling liquids, with good solvency for the polymer, relatively low viscosity, showing good heat and chemical stability, and in a molecular weight range of 300–600 g/mol. Almost all plasticizers are esters.
- Can a monomeric plasticizer be used to make PVC?
- The use of monomeric plasticizers has made possible the fabrication of PVC at reduced temperatures. The introduction of a new plasticizer is always approached with caution, lest this new aspect reintroduce unwanted chemical stability problems. The evaluation of such systems is conducted in a variety of ways.
- How does a polymeric plasticizer affect molecular mobility?
- The fundamental molecular effect of a monomeric plasticizer is to interact on a molecular scale with the segments of the polymer to speed up the viscoelastic response of the polymer. A polymeric plasticizer produces exactly the same result. Thus, a plasticizer increases the molecular mobility of the polymer chains.
- Is oligimeric material better than high molecular weight plasticizer?
- In this test, the oligimeric material is not so good as the high molecular weight plasticizer. In the test for volatiles or migration tests, the oligimeric product seems to perform almost as well as high molecular weight products.
- What is the permanence of high molecular weight plasticizers?
- The permanence of high molecular weight plasticizers is such that the average molecular weight of the polymeric plasticizer is no longer a factor.
- Are polymeric plasticizers good for amorphous glassy polymers?
- The behavior of polymeric plasticizers for amorphous, glassy polymers is quite similar when one system is compared with another. The same physical principles apply to each case, and the performance of the blends is qualitatively similar.
