合成树脂及塑料
閤成樹脂及塑料
합성수지급소료
CHINA SYNTHETIC RESIN AND PLASTICS
2015年
1期
15-20
,共6页
聚丁二酸丁二酯%1,4-环己烷二甲醇%非等温结晶行为%结晶形态%力学性能
聚丁二痠丁二酯%1,4-環己烷二甲醇%非等溫結晶行為%結晶形態%力學性能
취정이산정이지%1,4-배기완이갑순%비등온결정행위%결정형태%역학성능
poly(butylene succinate)%1,4-cyclohexanedimethanol%non-isothermal crystallization beha-vior%crystalline morphology%mechanical property
通过改变1,4-丁二醇（BD）与1,4-环己烷二甲醇（CHDM）的配比，将其与1,4-丁二酸（SA）进行熔融缩聚合制备可生物降解聚丁二酸丁二酯（PBS）及BD-SA-CHDM共聚物[P（BS-co-CHDM）]。表征了P（BS-co-CHDM）的结构并研究了PBS及其共聚物的非等温结晶行为、晶体结构、结晶形态及力学性能。结果表明：Jeziorny法和莫志深法均可很好地描述P（BS-co-CHDM）的非等温结晶行为，与PBS相比，P（BS-co-CHDM）的结晶速率随CHDM含量的增加先增大再减小；P（BS-co-CHDM）的晶体结构与PBS相同，仍为单斜α晶，70℃等温结晶2h后，球晶尺寸随P（BS-co-CHDM）中CHDM含量的增加而减小；y（CHDM）为20%时，P（BS-co-CHDM）的断裂拉伸应变达208.9%。
通過改變1,4-丁二醇（BD）與1,4-環己烷二甲醇（CHDM）的配比，將其與1,4-丁二痠（SA）進行鎔融縮聚閤製備可生物降解聚丁二痠丁二酯（PBS）及BD-SA-CHDM共聚物[P（BS-co-CHDM）]。錶徵瞭P（BS-co-CHDM）的結構併研究瞭PBS及其共聚物的非等溫結晶行為、晶體結構、結晶形態及力學性能。結果錶明：Jeziorny法和莫誌深法均可很好地描述P（BS-co-CHDM）的非等溫結晶行為，與PBS相比，P（BS-co-CHDM）的結晶速率隨CHDM含量的增加先增大再減小；P（BS-co-CHDM）的晶體結構與PBS相同，仍為單斜α晶，70℃等溫結晶2h後，毬晶呎吋隨P（BS-co-CHDM）中CHDM含量的增加而減小；y（CHDM）為20%時，P（BS-co-CHDM）的斷裂拉伸應變達208.9%。
통과개변1,4-정이순（BD）여1,4-배기완이갑순（CHDM）적배비，장기여1,4-정이산（SA）진행용융축취합제비가생물강해취정이산정이지（PBS）급BD-SA-CHDM공취물[P（BS-co-CHDM）]。표정료P（BS-co-CHDM）적결구병연구료PBS급기공취물적비등온결정행위、정체결구、결정형태급역학성능。결과표명：Jeziorny법화막지심법균가흔호지묘술P（BS-co-CHDM）적비등온결정행위，여PBS상비，P（BS-co-CHDM）적결정속솔수CHDM함량적증가선증대재감소；P（BS-co-CHDM）적정체결구여PBS상동，잉위단사α정，70℃등온결정2h후，구정척촌수P（BS-co-CHDM）중CHDM함량적증가이감소；y（CHDM）위20%시，P（BS-co-CHDM）적단렬랍신응변체208.9%。
Both?biodegradable?poly(butylene?succinate)(PBS)?and?poly(butylene?succinate-co-1,4-cyclohexanedimethanol)?[P(BS-co-CHDM)]?were?synthesized?via?melt?polycondensation?of?blends?of?1,4-butanediol?and?1,4-cyclohexanedimethanol(CHDM)?with?different?ratios?and?1,4-succinic?acid.?The?structure?of?P(BS-co-CHDM)?was?characterized,and?the?non-isothermal?crystallization?behaviors,crystal?structures, crystalline?morphology?and?mechanical?properties?of?PBS?and?P(BS-co-CHDM)?were?studied.?The?results?show?that?Jeziorny's?and?Mo's?method?can?well?describe?the?non-isothermal?crystallization?of?P(BS-co-CHDM).?With?the?increase?in?CHDM?content,the?crystallization?rate?of?P(BS-co-CHDM)?increases?first?and?decreases?then?compared?to?that?of?PBS.?However,the?crystallization?mechanism?of?the?copolymer?keeps?unchanged?and?the?unit?cell?is?monoclinic?α?form.?The?spherulite?size?is?reduced?with?the?increase?of?CHDM?content?after?isothermal?crystallization?of?the?copolymer?at?70?℃?for?two?hours.?The?tensile?strain?at?break?of?P(BS-co-CHDM)reaches?208.9%?when?the?molar?percentage?of?CHDM?is?20%.
