Crystallizability of Poly(ε-caprolactone) Blends with Poly(vinylphenol) under Different Conditions  

作　　者：Tian-bo Yang Xiao-li Sun Zhong-jie Ren 李慧慧 Shou-ke Yan 

机构地区：[1]State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology

出　　处：《Chinese Journal of Polymer Science》2014年第9期1119-1127,共9页高分子科学（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(Nos.21174014 and 51221002);New Century Excellent Talents in Universities(NCET-13-0648)

摘　　要：The intermolecular interaction between poly（vinylphenol） （PVPh） and polycaprolactone （PCL） and the crystallization behavior of PCL in PCL/PVPh blends with different compositions and under different conditions were investigated by Fourier transform infrared spectra （FTIR） and differential scanning calorimetry （DSC）. It has been shown that the PCL in the blends with different blend ratios all exists in crystalline state after solution casting, even though the crystallinity decreases with increasing PVPh content. For the melt crystallized samples, PCL in its 80/20 PCL/PVPh sample can still crystallize. The crystallinity is, however, lower than that of the solution cast sample. For blends containing 50% or 20% PCL, the as-cast samples are semicrystalline and can change to compatible amorphous state after heat treatment process. FTIR analysis shows the existence of hydrogen bonding between PCL and PVPh and the fraction of hydrogen bonds increases remarkably after heat treatment process.The intermolecular interaction between poly（vinylphenol） （PVPh） and polycaprolactone （PCL） and the crystallization behavior of PCL in PCL/PVPh blends with different compositions and under different conditions were investigated by Fourier transform infrared spectra （FTIR） and differential scanning calorimetry （DSC）. It has been shown that the PCL in the blends with different blend ratios all exists in crystalline state after solution casting, even though the crystallinity decreases with increasing PVPh content. For the melt crystallized samples, PCL in its 80/20 PCL/PVPh sample can still crystallize. The crystallinity is, however, lower than that of the solution cast sample. For blends containing 50% or 20% PCL, the as-cast samples are semicrystalline and can change to compatible amorphous state after heat treatment process. FTIR analysis shows the existence of hydrogen bonding between PCL and PVPh and the fraction of hydrogen bonds increases remarkably after heat treatment process.

关 键 词：Poly（vinylphenol） POLYCAPROLACTONE Polymer blends CRYSTALLINITY Hydrogen bonding. 

分 类 号：O631.13[理学—高分子化学]