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Strong Memory Effect of Metastable beta Form Trans-1,4-Polyisoprene above Equilibrium Melting Temperature

文献类型：期刊论文

作者Lu, Jie1,2; Yang, Haoran1,2; Ji, Youxin1,2; Li, Xiangyang3; Lv, Yankun1,2; Su, Fengmei1,2; Li, Liangbin1,2
刊名MACROMOLECULAR CHEMISTRY AND PHYSICS
出版日期2017-10-01
卷号218期号:20页码:1-6
关键词Memory Effect Metastable Phase Trans-1 4-polyisoprene
DOI10.1002/macp.201700235
文献子类Article
英文摘要The memory effect of metastable form crystals of trans-1,4-polyisoprene (TPI) is investigated with its thermodynamically stable -TPI as reference. Unexpectedly, -TPI exhibits a stronger memory effect over -TPI. The memory temperature of -TPI can be 20 degrees C higher than its equilibrium melting point (78 degrees C), while -TPI has lost memory below the equilibrium melting point (87 degrees C). Moreover, the ordered structures in -TPI memorized melt accelerate spherulite growth, and the growth rate depends on melting time, similar to previous mesomorphic isotactic polypropylene studies, implying metastable phase may have universal memory effects: wide memory temperature range, crystal nucleation and growth accelerating. The higher memory temperature of metastable phase may be from weak entropic difference with isotropic melt, which cannot overcome the barrier from entanglements as thermodynamically stable phase, leading to slow relaxation. This discovery can regulate crystalline morphologies of polymers by controlling the locations of different form crystals.
WOS关键词ISOTHERMAL CRYSTALLIZATION ; ISOTACTIC POLYPROPYLENE ; SEMICRYSTALLINE POLYMERS ; SINGLE-CRYSTALS ; SELF-NUCLEATION ; COPOLYMERS ; MORPHOLOGY ; KINETICS ; BEHAVIOR ; BLENDS
WOS研究方向Polymer Science
语种英语
WOS记录号WOS:000413354700008
资助机构National Natural Science Foundation of China(51325301 ; National Natural Science Foundation of China(51325301 ; National Natural Science Foundation of China(51325301 ; National Natural Science Foundation of China(51325301 ; 51227801 ; 51227801 ; 51227801 ; 51227801 ; 51633009 ; 51633009 ; 51633009 ; 51633009 ; 51303166) ; 51303166) ; 51303166) ; 51303166) ; National Natural Science Foundation of China(51325301 ; National Natural Science Foundation of China(51325301 ; National Natural Science Foundation of China(51325301 ; National Natural Science Foundation of China(51325301 ; 51227801 ; 51227801 ; 51227801 ; 51227801 ; 51633009 ; 51633009 ; 51633009 ; 51633009 ; 51303166) ; 51303166) ; 51303166) ; 51303166)
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/33827]  
专题合肥物质科学研究院_应用技术研究所
作者单位1.Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Hefei 230029, Anhui, Peoples R China
2.Univ Sci & Technol China, CAS Key Lab Soft Matter Chem, Hefei 230029, Anhui, Peoples R China
3.Chinese Acad Sci, Inst Appl Technol, Key Lab Novel Thin Film Solar Cells, Hefei Inst Phys Sci, Hefei 230088, Anhui, Peoples R China
推荐引用方式
GB/T 7714		 Lu, Jie,Yang, Haoran,Ji, Youxin,et al. Strong Memory Effect of Metastable beta Form Trans-1,4-Polyisoprene above Equilibrium Melting Temperature[J]. MACROMOLECULAR CHEMISTRY AND PHYSICS,2017,218(20):1-6.
APA Lu, Jie.,Yang, Haoran.,Ji, Youxin.,Li, Xiangyang.,Lv, Yankun.,...&Li, Liangbin.(2017).Strong Memory Effect of Metastable beta Form Trans-1,4-Polyisoprene above Equilibrium Melting Temperature.MACROMOLECULAR CHEMISTRY AND PHYSICS,218(20),1-6.
MLA Lu, Jie,et al."Strong Memory Effect of Metastable beta Form Trans-1,4-Polyisoprene above Equilibrium Melting Temperature".MACROMOLECULAR CHEMISTRY AND PHYSICS 218.20(2017):1-6.

入库方式： OAI收割

来源：合肥物质科学研究院

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