The methods for modifying heat resistance of poly(vinyl chloride) (PVC) resins were reviewed, including blending modification, copolymerization modification and chlorination modification, etc.
对聚氯乙烯（PVC）树脂耐热改性方法的研究进行了综述。 PVC树脂耐热改性方法有共混改性、共聚合改性、氯化改性和其他改性。
This paper introduces modification of poly vinyl acetate by copolymerization and the application state of the modified products.
文章介绍了聚醋酸乙烯酯共聚改性研究及改性产品应用进展情况。
The graft copolymerization of vinyl monomers onto starch was an important method for the modification of starch.
淀粉与乙烯基单体接枝共聚是淀粉改性的重要方法。
So, the chemical modification which is carboxylic acid monomer graft copolymerization and adding in some functional monomers to prepare waterborne epoxy resin was carried out.
因此，我们采用羧基单体接枝共聚并加入功能单体的方法对环氧树脂进行水性化的化学改性。
During the study of crosslinking modification, copolymerization PP was modified by peroxide initiator and multifunctional assistant crosslinker.
在交联改性的研究中，采用过氧化物引发剂和多官能团助交联剂对共聚pp进行交联改性。
It showed that the improvement of hydrophilicity, reactivity, biocompatibility, and biodegradation of PBS could be achieved by copolymerization and blend modification.
目前的研究表明，通过共聚、共混等改性方法可以改善PBS的亲水性、反应活性、生物相容性及降解行为。
Graft copolymerization is a effective method for chemical modification. After graft copolymerization, the physical and chemical properties of macromolecules can be improved.
接枝共聚是一种有效的化学修饰方法，经过接枝改性后，高分子化合物的物理、机械和化学性质都能得到改善。
The paper reviewed the modification of chitosan by free radical polymerization and atom transfer radical polymerization(ATRP), emphasized the application of ATRP on graft copolymerization of chitosan.
综述了普通自由基聚合和原子转移自由基聚合（ATRP）反应对壳聚糖及其衍生物进行修饰改性的研究现状。着重介绍了ATRP技术在壳聚糖接枝改性方面的应用。
The paper reviewed the modification of chitosan by free radical polymerization and atom transfer radical polymerization(ATRP), emphasized the application of ATRP on graft copolymerization of chitosan.
综述了普通自由基聚合和原子转移自由基聚合（ATRP）反应对壳聚糖及其衍生物进行修饰改性的研究现状。着重介绍了ATRP技术在壳聚糖接枝改性方面的应用。
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