The effect of ethylene comonomer content on the crystallization, mechanical and viscoelastic properties of VERSIFY copolymers was studied by DSC, DMTA, POM and WAXD.

通过DSC，DMTA，POMWAXD等手段，研究了乙烯共聚单的变化对VERSIFY共聚物结晶性能、力学性能粘弹性能的影响。

This article reviewed the therapeutic use of chitosan as artificial lacrima, medical viscoelastic material, carrier of drug delivery systems and so on in ophthalmic disease.

本文就壳聚糖作为液、医用粘弹剂、药物缓释系统载、抗纤维增生药物等的应用进行简要的介绍。