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Strong Memory Effect of Metastable beta Form Trans-1,4-Polyisoprene above Equilibrium Melting Temperature
Lu, Jie1,2; Yang, Haoran1,2; Ji, Youxin1,2; Li, Xiangyang3; Lv, Yankun1,2; Su, Fengmei1,2; Li, Liangbin1,2
2017-10-01
Source PublicationMACROMOLECULAR CHEMISTRY AND PHYSICS
Volume218Issue:20Pages:1-6
AbstractThe 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.
SubtypeArticle
KeywordMemory Effect Metastable Phase Trans-1 4-polyisoprene
WOS HeadingsScience & Technology ; Physical Sciences
Funding OrganizationNational Natural Science Foundation of China(51325301 ; 51227801 ; 51633009 ; 51303166) ; National Natural Science Foundation of China(51325301 ; 51227801 ; 51633009 ; 51303166)
DOI10.1002/macp.201700235
WOS KeywordISOTHERMAL CRYSTALLIZATION ; ISOTACTIC POLYPROPYLENE ; SEMICRYSTALLINE POLYMERS ; SINGLE-CRYSTALS ; SELF-NUCLEATION ; COPOLYMERS ; MORPHOLOGY ; KINETICS ; BEHAVIOR ; BLENDS
Indexed BySCI
Language英语
Funding OrganizationNational Natural Science Foundation of China(51325301 ; 51227801 ; 51633009 ; 51303166) ; National Natural Science Foundation of China(51325301 ; 51227801 ; 51633009 ; 51303166)
WOS Research AreaPolymer Science
WOS SubjectPolymer Science
WOS IDWOS:000413354700008
Citation statistics
Document Type期刊论文
Identifierhttp://ir.hfcas.ac.cn:8080/handle/334002/33827
Collection应用技术研究所
Affiliation1.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
Recommended Citation
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.
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