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Article: Pimelic Acid-Based Nucleating Agents for Hexagonal Crystalline Polypropylene
Title | Pimelic Acid-Based Nucleating Agents for Hexagonal Crystalline Polypropylene |
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Authors | |
Issue Date | 1997 |
Citation | Journal Of Vinyl And Additive Technology, 1997, v. 3 n. 2, p. 151-156 How to Cite? |
Abstract | Isotactic polypropylene (PP) resin was doped with pimelic acid, sodium pimelate, and calcium pimelate to stimulate the growth of hexagonal crystalline polypropylene (β-PP). The doped resin was crystallized in a differential scanning calorimeter (DSC) and during compression molding and injection molding. The effect of the additives on the formation of β-PP was examined using DSC and wide angle X-ray scattering (WAXS). Pimelic acid alone was found ineffective while the pimelates induced 64% to 90% of β-growth depending on the nucleating agent system and crystallization condition. In particular, the pimelic acid/calcium stearate system produced a more consistent and higher yield of β-PP. This was attributed to finer particle size and better dispersion of the nucleating agent. |
Persistent Identifier | http://hdl.handle.net/10722/156298 |
ISSN | |
References |
DC Field | Value | Language |
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dc.contributor.author | Li, JX | en_US |
dc.contributor.author | Cheung, WL | en_US |
dc.date.accessioned | 2012-08-08T08:41:52Z | - |
dc.date.available | 2012-08-08T08:41:52Z | - |
dc.date.issued | 1997 | en_US |
dc.identifier.citation | Journal Of Vinyl And Additive Technology, 1997, v. 3 n. 2, p. 151-156 | en_US |
dc.identifier.issn | 0193-7197 | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/156298 | - |
dc.description.abstract | Isotactic polypropylene (PP) resin was doped with pimelic acid, sodium pimelate, and calcium pimelate to stimulate the growth of hexagonal crystalline polypropylene (β-PP). The doped resin was crystallized in a differential scanning calorimeter (DSC) and during compression molding and injection molding. The effect of the additives on the formation of β-PP was examined using DSC and wide angle X-ray scattering (WAXS). Pimelic acid alone was found ineffective while the pimelates induced 64% to 90% of β-growth depending on the nucleating agent system and crystallization condition. In particular, the pimelic acid/calcium stearate system produced a more consistent and higher yield of β-PP. This was attributed to finer particle size and better dispersion of the nucleating agent. | en_US |
dc.language | eng | en_US |
dc.relation.ispartof | Journal of Vinyl and Additive Technology | en_US |
dc.title | Pimelic Acid-Based Nucleating Agents for Hexagonal Crystalline Polypropylene | en_US |
dc.type | Article | en_US |
dc.identifier.email | Cheung, WL:wlcheung@hkucc.hku.hk | en_US |
dc.identifier.authority | Cheung, WL=rp00103 | en_US |
dc.description.nature | link_to_subscribed_fulltext | en_US |
dc.identifier.scopus | eid_2-s2.0-0001179944 | en_US |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-0001179944&selection=ref&src=s&origin=recordpage | en_US |
dc.identifier.volume | 3 | en_US |
dc.identifier.issue | 2 | en_US |
dc.identifier.spage | 151 | en_US |
dc.identifier.epage | 156 | en_US |
dc.identifier.scopusauthorid | Li, JX=7410061004 | en_US |
dc.identifier.scopusauthorid | Cheung, WL=7202743084 | en_US |
dc.identifier.issnl | 0193-7197 | - |