摘要
为实现聚乙烯醇(PVA)的熔融加工成型,将不同聚合度的2种PVA共混,并分别加入甘油/增塑剂1或甘油/增塑剂2复合增塑剂。X射线衍射仪、差示扫描量热仪及热失重分析仪等测试结果表明,复合增塑体系的加入使PVA的结晶度降低,熔点从225℃降低到206℃,热分解温度基本不变,PVA热塑性加工有望得到实现。
The authors blended two kinds of polyvinyl aleohol（PVA） with different degree of polymerization and added glycerin/plasticizer 1 or glycerin/plasticizer 2 composite plasticizing systems to the resultant PVA blend, respectively, aiming at being able to perform melt processing of PVA. The results of X-ray diffraction（XRD）, differential scanning calorimetry（DSC） and thermogravimetric（TG） analysis show that the addition of the composite plasticizers decreases the crystallinity and lowers the melting point of the PVA blend from 225 ℃ to 206 ℃, without bringing about any obvious impact on the thermal decomposition temperature. As a consequence, the thermoplastic processing of PVA can be feasibly carried out.
出处
《合成树脂及塑料》
CAS
北大核心
2010年第4期38-40,共3页
China Synthetic Resin and Plastics
关键词
聚乙烯醇
复合增塑剂
熔点
热分解温度
polyvinyl alcohol
composite plasticizer
melting point
thermal decomposition temperature
