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| Titel: |
CRYSTALLIZATION BEHAVIOR OF SYNDIOTACTIC POLYPROPYLENE: EFFECT OF SOLVENT OF VARYING MOLECULAR SIZE |
| Auteur: |
Sun, Qing Li, Yanhong Xue, Gi Chen, Wei |
| Verschenen in: |
International journal of polymeric materials |
| Paginering: | Jaargang 52 (2003) nr. 10 pagina's 891-900 |
| Jaar: |
2003-10 |
| Inhoud: |
Syndiotactic polypropylenes (s-PPs) were freeze-extracted from alkyl solvents of varying molar volume. Higher degree of crystallinity was found for s-PP recovered from hexadecane than that from octane by wide-angle X-ray diffraction. DSC analysis indicated that s-PP freeze-extracted from alkyl solvents of larger molar volume crystallized at a faster rate. FT-Raman spectra were used to characterize s-PP gels in octane and in hexadecane. It is found that interaction existed between the segments of s-PP chains and octane, while no interaction was found between s-PP and hexadecane, which may account for the faster crystallization rate and high degree of crystallinity. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 2 van 7 gevonden artikelen
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