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Evolution of Polymorphic Structure in beta-Nucleated Isotactic Polypropylene under a Certain Pressure: Effects of Temperature and Flow
Lin, JM; Li, Y; Xu, L; Hua, WQ; Yang, SG; Bian, FG; Lei, J; Li, ZM
2019
Source PublicationINDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
ISSN0888-5885
Volume58Issue:14Pages:5677—5685
Subtype期刊论文
AbstractIsotactic polypropylene (iPP) is one of the most intensively investigated polymeric materials for a long time because of its special polymorphism. In this work, the effects of temperature and flow on the evolution of polymorphic structure in beta-nucleated iPP under 100 MPa were studied by X-ray scattering techniques and differential scanning calorimetry (DSC). It was found that the evolution of polymorphic structure in iPP could be divided into four regions in terms of the shear strength under different temperatures: region I (0 s(-1), static condition), beta/gamma crystalline system with dominant beta-form; region II (0-13.8 s(-1), weak shear), alpha/beta/gamma crystalline system; region III (13.8-18.3 s(-1), medium shear), alpha/gamma crystalline system with dominant a-form at a low crystallization temperature (150 degrees C) while with dominant gamma-form at a high crystallization temperature (180 degrees C); region IV (18.3-21.3 s(-1), strong shear), a crystalline system at 150 degrees C while gamma crystalline system at 180 degrees C. These results could afford guidance in practical processing to fabricate iPP products with desired performance via controlling its polymorphic structure.
KeywordGAMMA-PHASE CRYSTALLIZATION BEHAVIOR MECHANICAL-PROPERTIES POLY(L-LACTIC ACID) SHEAR-FLOW X-RAY ALPHA CRYSTALS GROWTH AGENT
DOI10.1021/acs.iecr.8b06160
Indexed BySCI
Language英语
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/31610
Collection中科院上海应用物理研究所2011-2020年
Affiliation1.Sichuan Univ, Coll Polymer Sci & Engn, State Key Lab Polymer Mat Engn, Chengdu 610065, Sichuan, Peoples R China;
2.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China
Recommended Citation
GB/T 7714
Lin, JM,Li, Y,Xu, L,et al. Evolution of Polymorphic Structure in beta-Nucleated Isotactic Polypropylene under a Certain Pressure: Effects of Temperature and Flow[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2019,58(14):5677—5685.
APA Lin, JM.,Li, Y.,Xu, L.,Hua, WQ.,Yang, SG.,...&Li, ZM.(2019).Evolution of Polymorphic Structure in beta-Nucleated Isotactic Polypropylene under a Certain Pressure: Effects of Temperature and Flow.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,58(14),5677—5685.
MLA Lin, JM,et al."Evolution of Polymorphic Structure in beta-Nucleated Isotactic Polypropylene under a Certain Pressure: Effects of Temperature and Flow".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 58.14(2019):5677—5685.
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