摘要
选用聚合度为1700,醇解度为88%的聚乙烯醇(PVA),并通过增塑剂、稳定剂的筛选得到适宜的配方,当PVA∶增塑剂∶稳定剂=100∶30∶2时可以较好地实现PVA的熔融加工。采用熔融复合技术成功制备了LDPE/PVA复合材料,添加PVA后,体系具有良好的吸湿性能,并且随着吸湿时间的增加,吸湿率逐渐增加,但材料韧性大幅下降。同时初步研究和探讨了增容剂马来酸酐接枝低密度聚乙稀(LDPE-g-MAH)对复合材料结构、力学性能和吸湿功能的影响。
Polyvinyl alcohol （PVA）with 88% alcoholysis degree and 1700 polymerization degree can be melted well by dding 30 phr plasticizer and 2phr stabilizer, and then can he melting mixed with the low density polyethylene （LDPE）. As a result, the functional material, LDPE based blends with good moisture absorption property but less toughness can be obtained using a simple method. It is found that the compatibilizer, LDPE-g-MAH can efficiently modify compatibility between LDPE and PVA, improve the dispersion of PVA, and enhance the mechanical properties of LDPE/PVA, but decrease moisture absorption function of the blends.
出处
《材料科学与工程学报》
CAS
CSCD
北大核心
2008年第6期904-907,877,共5页
Journal of Materials Science and Engineering
关键词
聚乙烯
聚乙烯醇
熔融复合
制备
吸湿
polyethylene
polyvinyl alcohol
melting mixing
preparation
moisture absorption
