从4,4＇-二氟三苯二酮（DFTBDK）和酚酞出发,利用＂拟高稀（pseudo high dillution）＂技术,一步法制备酚酞聚芳醚酮酮环状齐聚物（c-PEKK-C）,成环率78%。基质辅助激光解吸电离飞行时间质谱MALDI-TOF MS数据表明,聚合产物系聚合度为n=...从4,4＇-二氟三苯二酮（DFTBDK）和酚酞出发,利用＂拟高稀（pseudo high dillution）＂技术,一步法制备酚酞聚芳醚酮酮环状齐聚物（c-PEKK-C）,成环率78%。基质辅助激光解吸电离飞行时间质谱MALDI-TOF MS数据表明,聚合产物系聚合度为n=2~8的环状低聚物,其中以二、三聚体为主要成分（占环化产物的85%）。运用J-S高分子环化理论证实4,4＇-二氟三苯二酮的单体结构有利于形成环状化合物。以4,4＇-联苯二酚钾盐为催化剂,在300~350℃范围内,N2气保护下,环状齐聚物进行熔融开环聚合反应得到相应的线性高相对分子质量酚酞聚芳醚酮酮（ROP-PEKK-C）,GPC测得其Mw为1.2×10^5。展开更多
As the miscible polymer blend systems,poly(arylene ether ketone)s (PAEK)/poly(ether imide) (PEI) blends had attracted many researches.Because almost all the commercial PAEK are the semi crystalline polymers,no amorpho...As the miscible polymer blend systems,poly(arylene ether ketone)s (PAEK)/poly(ether imide) (PEI) blends had attracted many researches.Because almost all the commercial PAEK are the semi crystalline polymers,no amorphous PAEK and PEI blends had been researched.Poly(phthalazinone ether ketone ketone) (PPEKK),a novel high heat resistant performance thermoplastic,is an amorphous PAEK.The miscibility of PPEKK/PEI blends was investigated using ternary solution methods and differential scanning calorimetry(DSC).The ternary solution methods results indicated that the blends are miscible because chloroform solution of blends is uniform after being kept more than 10 days. A single glass transition temperature( T g) for different compositions blends was showed by DSC results and the relationship of T g s and composition is in agreement with Gordon Taylor equation which is applied for the miscible polymer blends.Scanning electron microscopy for as quenched PPEKK/PEI blend sample further proved the miscibility of the blends.The FT IR results indicated that the interaction of two polymers in the blends is weak,therefore,the miscibility of the blends should be contributed to the repulsion between the two components is weaker than that in themselves.The tensile properties of blends’ film samples were tested and the tensile modulus,tensile strength and elongation at break of some composition blends are larger than that of pure resins,which can be explained by the miscibility of the blends.展开更多
A novel heterocyclic poly (aryl ether ketone ketone) (PPEKK) containing cyclohexenering was prepared from 1-methyl-cyclohex-1-ene-4, 5 -diyl-bis(4-chlorophenyl methanone) and 4 (4-hydroxyphenyl)(2H) phthalazin-1-one. ...A novel heterocyclic poly (aryl ether ketone ketone) (PPEKK) containing cyclohexenering was prepared from 1-methyl-cyclohex-1-ene-4, 5 -diyl-bis(4-chlorophenyl methanone) and 4 (4-hydroxyphenyl)(2H) phthalazin-1-one. The polymer was characterized by FTIR, 1HNMR, DSC,TG and X-ray analysis.展开更多
文摘从4,4＇-二氟三苯二酮（DFTBDK）和酚酞出发,利用＂拟高稀（pseudo high dillution）＂技术,一步法制备酚酞聚芳醚酮酮环状齐聚物（c-PEKK-C）,成环率78%。基质辅助激光解吸电离飞行时间质谱MALDI-TOF MS数据表明,聚合产物系聚合度为n=2~8的环状低聚物,其中以二、三聚体为主要成分（占环化产物的85%）。运用J-S高分子环化理论证实4,4＇-二氟三苯二酮的单体结构有利于形成环状化合物。以4,4＇-联苯二酚钾盐为催化剂,在300~350℃范围内,N2气保护下,环状齐聚物进行熔融开环聚合反应得到相应的线性高相对分子质量酚酞聚芳醚酮酮（ROP-PEKK-C）,GPC测得其Mw为1.2×10^5。
文摘As the miscible polymer blend systems,poly(arylene ether ketone)s (PAEK)/poly(ether imide) (PEI) blends had attracted many researches.Because almost all the commercial PAEK are the semi crystalline polymers,no amorphous PAEK and PEI blends had been researched.Poly(phthalazinone ether ketone ketone) (PPEKK),a novel high heat resistant performance thermoplastic,is an amorphous PAEK.The miscibility of PPEKK/PEI blends was investigated using ternary solution methods and differential scanning calorimetry(DSC).The ternary solution methods results indicated that the blends are miscible because chloroform solution of blends is uniform after being kept more than 10 days. A single glass transition temperature( T g) for different compositions blends was showed by DSC results and the relationship of T g s and composition is in agreement with Gordon Taylor equation which is applied for the miscible polymer blends.Scanning electron microscopy for as quenched PPEKK/PEI blend sample further proved the miscibility of the blends.The FT IR results indicated that the interaction of two polymers in the blends is weak,therefore,the miscibility of the blends should be contributed to the repulsion between the two components is weaker than that in themselves.The tensile properties of blends’ film samples were tested and the tensile modulus,tensile strength and elongation at break of some composition blends are larger than that of pure resins,which can be explained by the miscibility of the blends.
文摘A novel heterocyclic poly (aryl ether ketone ketone) (PPEKK) containing cyclohexenering was prepared from 1-methyl-cyclohex-1-ene-4, 5 -diyl-bis(4-chlorophenyl methanone) and 4 (4-hydroxyphenyl)(2H) phthalazin-1-one. The polymer was characterized by FTIR, 1HNMR, DSC,TG and X-ray analysis.
