ICCAS OpenIR
MELTING BEHAVIOR OF SYNDIOTACTIC POLYPROPYLENE FIBERS WITH DIFFERENT INITIAL STRUCTURES
Zhang Xiuqin1; Luo Faliang1,2; Li Rongbo1; Chen Erqiang3; Wang Dujin1
2009-10-20
Source PublicationACTA POLYMERICA SINICA
ISSN1000-3304
Issue10Pages:1037-1042
AbstractSyndiotactic polypropylene ( sPP) fibers with different initial structures were prepared by melt-spinning and subsequent heat treatment. Structure transition and melting behavior during the heating process were, systematically investigated by a combination of differential scanning calorimetry (DSC) and temperature variable wide angle X-ray diffraction (WAXD) The results indicate that the melting peak at temperatures lower than 100 degrees C is attributed to the melting or transition of mesophase. With increasing temperature, the crystals form I and form II in as-spun and annealed fibers melt directly, indicating that no occurrence of the transition from form 11 to form I. For sPP fibers with mesophase,partial mesophase can transform directly to form 11 and some mesophase melts and forms crystal form I in the following heating process. For annealed sPP fibers with crystals form I and U ( sPP-300-1.5-80), the highest-temperature melting peak (T(m.3)) is mainly attributed to the melting of crystal form I produced during the course of melt recrystallization at T(m.2). Structure transition and multiple melting peaks of the sPP fiber,, during heating process are determined by the initial structure and the preparation conditions of the fibers.
KeywordSyndiotactic Polypropylene Fiber Crystal Structure Transition Melting Behavior
Indexed BySCI
Language英语
WOS IDWOS:000271267200009
PublisherSCIENCE PRESS
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Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/68260
Collection中国科学院化学研究所
Corresponding AuthorZhang Xiuqin
Affiliation1.Chinese Acad Sci, Inst Chem, Key Lab Engn Plast, Beijing 100190, Peoples R China
2.Ningxia Univ, Key Lab Energy & Resource Ningxia, Yinchuan 740002, Peoples R China
3.Peking Univ, Coll Chem & Mol Engn, Beijing 100871, Peoples R China
Recommended Citation
GB/T 7714
Zhang Xiuqin,Luo Faliang,Li Rongbo,et al. MELTING BEHAVIOR OF SYNDIOTACTIC POLYPROPYLENE FIBERS WITH DIFFERENT INITIAL STRUCTURES[J]. ACTA POLYMERICA SINICA,2009(10):1037-1042.
APA Zhang Xiuqin,Luo Faliang,Li Rongbo,Chen Erqiang,&Wang Dujin.(2009).MELTING BEHAVIOR OF SYNDIOTACTIC POLYPROPYLENE FIBERS WITH DIFFERENT INITIAL STRUCTURES.ACTA POLYMERICA SINICA(10),1037-1042.
MLA Zhang Xiuqin,et al."MELTING BEHAVIOR OF SYNDIOTACTIC POLYPROPYLENE FIBERS WITH DIFFERENT INITIAL STRUCTURES".ACTA POLYMERICA SINICA .10(2009):1037-1042.
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