典型文献
Architecting Branch Structure in Terpolymer of CO2,Propylene Oxide and Phthalic Anhydride:An Enhancement in Thermal and Mechanical Performances
文献摘要：
Poly(propylene carbonate phthalate)(PPC-P)is a chemically modified poly(propylene carbonate)(PPC)biodegradable thermoplastic by introducing phthalic anhydride(PA)as the third monomer into the copolymerization of propylene oxide(PO)and CO2.To enhance the thermal and mechanical properties of PPC-P,a branching agent pyromellitic anhydride(PMDA)was introduced into the terpolymerization of PO,PA and CO2.The resulting copolymers with branched structure,named branched PPC-P,can be obtained using metal-free Lewis pair consisting of triethyl borane(TEB)and bis(triphenylphosphine)iminium chloride(PPNCI)as catalyst.The products obtained were analyzed by NMR spectro-scopy and their thermal,mechanical properties and melt processability were evaluated by DSC,TGA,tensile test and melt flow index(MFI)measurement.The obtained branched PPC-P has a high molecular weight up to 156.0 kg·mol-1.It shows an increased glass transition tempera-ture(Tg)higher than 50℃and an enhanced tensile strength as high as 38.9 MPa.Noteworthily,the MFI value decreases obviously,indicative of an improved melt strength arising from the branched structure and high molecular weight.What is more,the branched PPC-P exhibits reasonable biodegradability,which demonstrates the great potential as a new green thermoplastic for the family of biodegradable plastics.
文献关键词：
中图分类号：
作者姓名：
Wen-Jing Wang;Shu-Xian Ye;Jia-Xin Liang;Cong-Xiao Fan;Yong-Lan Zhu;Shuan-Jin Wang;Min Xiao;Yue-Zhong Meng
作者机构：
The key laboratory of Low-carbon Chemistry&Energy Conservation of Guangdong Province,State Key Laboratory of Optoelectronic Materials and Technologies,School of Materials Science and Engineering,Sun Yat-sen University,Guangzhou 510275,China
文献出处：
引用格式：
[1]Wen-Jing Wang;Shu-Xian Ye;Jia-Xin Liang;Cong-Xiao Fan;Yong-Lan Zhu;Shuan-Jin Wang;Min Xiao;Yue-Zhong Meng-.Architecting Branch Structure in Terpolymer of CO2,Propylene Oxide and Phthalic Anhydride:An Enhancement in Thermal and Mechanical Performances)[J].高分子科学（英文版）,2022(05):462-468
A类：
Architecting,Terpolymer,pyromellitic,terpolymerization,triethyl,triphenylphosphine,iminium,PPNCI
B类：
Branch,Structure,Propylene,Oxide,Phthalic,Anhydride,Enhancement,Thermal,Mechanical,Performances,Poly,propylene,carbonate,phthalate,PPC,chemically,modified,biodegradable,thermoplastic,by,introducing,phthalic,anhydride,PA,third,monomer,into,copolymerization,oxide,PO,To,thermal,mechanical,properties,branching,agent,PMDA,was,introduced,resulting,copolymers,branched,structure,named,can,be,obtained,using,metal,free,Lewis,pair,consisting,borane,TEB,bis,chloride,catalyst,products,were,analyzed,NMR,spectro,scopy,their,melt,processability,evaluated,DSC,TGA,tensile,test,flow,MFI,measurement,has,molecular,weight,up,It,shows,increased,glass,transition,tempera,Tg,higher,than,enhanced,strength,Noteworthily,value,decreases,obviously,indicative,improved,arising,from,What,more,exhibits,reasonable,biodegradability,which,demonstrates,great,potential,new,green,family,plastics
AB值：
0.58595
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