The server is under maintenance between 08:00 to 12:00 (GMT+08:00), and please visit
later.
We apologize for any inconvenience caused
Non-isothermal crystallization kinetics of modified polyvinyl alcohol
Author(s): Wang Youfu, Li Wengang
Pages: 39-
42,47
Year: 2013
Issue:
5
Journal: China Synthetic Fiber Industry
Keyword: polyvinyl alcohol; modification; thermal analysis; non-isothermal crystallization kinetics;
Abstract: 通过差示扫描量热法(DSC)测定了己内酰胺水溶液改性的聚乙烯醇(PVA)降温结晶过程,并用Ozawa方法,Jeziomy方法和莫志深方法分析了改性PVA的非等温结晶动力学.结果表明:随着冷却速率增加,改性体系内起增塑作用的小分子由于其蒸发升华的减缓,改性PVA体系的运动能力增强,结晶度提高;莫志深方法能够较好地解释改性PVA的非等温结晶过程,即在单位时间内达到较大结晶度需较大的降温速率,且随着体系相对结晶度的增加,结晶速率降低.
Citations
No citation information