Influence of Polyol Plasticizers on the Properties of Polyvinyl Alcohol Films Fabricated by Melt Processing |
| |
| Authors: | Wenqian Wu Huafeng Tian Aimin Xiang |
| |
| Institution: | (1) School of Material and Mechanical Engineering, Beijing Technology and Business University, Beijing, 100048, China; |
| |
| Abstract: | In this work, high-alcoholysis polyvinyl alcohol (PVA) films were fabricated by melt processing and the plasticizing effect
of compound polyol plasticizers on PVA were investigated with X-ray diffraction (XRD), differential scanning calorimetry (DSC),
rheological measurements, mechanical tests etc. Hydrogen bonding interactions occurred between PVA and plasticizer. With the
increase of plasticizer, the flowability of PVA was improved and reached the maximum value at the plasticizer of 20%. Glass
transition temperature (T
g) and melting point (T
m) decreased with the increase of plasticizer content. For the heterogeneous nucleation effect of plasticizer, new polymorph
of PVA formed. The viscosity was sensitive to the shear rates. The incorporation of plasticizers into PVA resulted in the
increase of elongation at break and impact strength, as well as the decrease of tensile strength. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
