Synthesis and characterization of novel polyamides with pendant phthalonitrile groups
IntroductionWholly aromatic polyamides have received much attention over the last decades because of their unique properties such as superior heat resistance, mechanical properties and chemical resistance.However, rigidity of the backbone and hydrogen bonding results in high melting or glass transition temperature and limited solubility in most organic solvent.These characteristics make them generally difficulty to fabricate into useful forms,thus restricting their applications.To overcome that problems, a great deal of efforts have been focused on synthesis of soluble polyamides while maintaining their outstanding properties. These studies include introducing flexible segments into the polymer chain; replacing symmetrical aromatic rings by unsymmetrical ones; introducing bulky pendant substitutes to minimize the polymer chain packing; and forming a non-coplanar structure. Among these modifying methods, introduction of pendant groups into polymer backbone has been recognized as one of the successful approaches to increase the solubility and processability of polyamides without deterioration of their unique properties. However, this approach often cost the high temperature mechanical properties and solvent resistance of PAs due to the reduced chain-chain interactions.Thus, their applications were limited in many fields.
Ke Zeng Haibing Hong Shaohong Zhou Hongfei Zhou Tao Liu Peikai Miao Gang Yang
State Key Laboratory of Polymer Materials Engineering,College of Polymer Science and Engineering,Sichuan University,Chengdu,610065,China
国际会议
5th International Symposium on High-Tech Polymer Materials(HTPM-V)(第五届国际高技术高分子材料学术会议)
北京
英文
183-184
2008-10-27（万方平台首次上网日期，不代表论文的发表时间）