Enhanced orientation of the water-assisted injection-molded ipp in the presence of nucleating agent
The nucleated isotactic polypropylene (iPP) was molded by water‐assisted injection molding. The crystalline morphology and orientation distribution were studied. The results show that shear brought by melt filling and pressurized water penetration can separately induce the formation of oriented stru...
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| Veröffentlicht in: | Polymer engineering and science 2012-04, Vol.52 (4), p.725-732 |
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| creator | Zheng, Guo-Qiang Jia, Zhenhua Liu, Xianhu Liu, Baochen Zhang, Xiaoli Dai, Kun Shao, Chunguang Zheng, Xuejing Liu, Chuntai Cao, Wei Chen, Jingbo Peng, Xiangfang Li, Qian Shen, Changyu |
| description | The nucleated isotactic polypropylene (iPP) was molded by water‐assisted injection molding. The crystalline morphology and orientation distribution were studied. The results show that shear brought by melt filling and pressurized water penetration can separately induce the formation of oriented structures in skin region (i.e., the region near mold cavity wall) and the water channel region. For virgin iPP, slightly oriented lamellae appear exclusively in the above aforementioned regions. However, shish‐kebab structure occurs not only in skin and water channel region of the iPP containing moderate content of nucleator (0.2 wt%) but also in the whole region of the iPP containing a higher content of nucleator (1 wt%). It is well known that nucleator cannot directly induce the development of shish‐kebab in the absence of shear, thus the results indicate: shear flow actually distributes over a much broader range than expected; in shear field, nucleator is significantly helpful for the shear which is not sufficient to solely induce oriented structure to promote the formation of the oriented structure. POLYM. ENG. SCI., 2012. © 2012 Society of Plastics Engineers |
| doi_str_mv | 10.1002/pen.22095 |
| format | Article |
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The crystalline morphology and orientation distribution were studied. The results show that shear brought by melt filling and pressurized water penetration can separately induce the formation of oriented structures in skin region (i.e., the region near mold cavity wall) and the water channel region. For virgin iPP, slightly oriented lamellae appear exclusively in the above aforementioned regions. However, shish‐kebab structure occurs not only in skin and water channel region of the iPP containing moderate content of nucleator (0.2 wt%) but also in the whole region of the iPP containing a higher content of nucleator (1 wt%). It is well known that nucleator cannot directly induce the development of shish‐kebab in the absence of shear, thus the results indicate: shear flow actually distributes over a much broader range than expected; in shear field, nucleator is significantly helpful for the shear which is not sufficient to solely induce oriented structure to promote the formation of the oriented structure. POLYM. ENG. SCI., 2012. © 2012 Society of Plastics Engineers</description><identifier>ISSN: 0032-3888</identifier><identifier>EISSN: 1548-2634</identifier><identifier>DOI: 10.1002/pen.22095</identifier><identifier>CODEN: PYESAZ</identifier><language>eng</language><publisher>Hoboken: Wiley Subscription Services, Inc., A Wiley Company</publisher><subject>Applied sciences ; Chemical properties ; Exact sciences and technology ; Injection molding ; Morphology ; Nucleation ; Physicochemistry of polymers ; Polymer industry, paints, wood ; Polymers ; Polypropylene ; Production processes ; Technology of polymers</subject><ispartof>Polymer engineering and science, 2012-04, Vol.52 (4), p.725-732</ispartof><rights>Copyright © 2012 Society of Plastics Engineers</rights><rights>2014 INIST-CNRS</rights><rights>COPYRIGHT 2012 Society of Plastics Engineers, Inc.</rights><rights>Copyright Blackwell Publishing Ltd. Apr 2012</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c6075-6dd40dad439e14f02f52d20521a789390315d51b93d74ba2d50a69800788fcfd3</citedby><cites>FETCH-LOGICAL-c6075-6dd40dad439e14f02f52d20521a789390315d51b93d74ba2d50a69800788fcfd3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Fpen.22095$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fpen.22095$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,778,782,1414,27907,27908,45557,45558</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=25654236$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Zheng, Guo-Qiang</creatorcontrib><creatorcontrib>Jia, Zhenhua</creatorcontrib><creatorcontrib>Liu, Xianhu</creatorcontrib><creatorcontrib>Liu, Baochen</creatorcontrib><creatorcontrib>Zhang, Xiaoli</creatorcontrib><creatorcontrib>Dai, Kun</creatorcontrib><creatorcontrib>Shao, Chunguang</creatorcontrib><creatorcontrib>Zheng, Xuejing</creatorcontrib><creatorcontrib>Liu, Chuntai</creatorcontrib><creatorcontrib>Cao, Wei</creatorcontrib><creatorcontrib>Chen, Jingbo</creatorcontrib><creatorcontrib>Peng, Xiangfang</creatorcontrib><creatorcontrib>Li, Qian</creatorcontrib><creatorcontrib>Shen, Changyu</creatorcontrib><title>Enhanced orientation of the water-assisted injection-molded ipp in the presence of nucleating agent</title><title>Polymer engineering and science</title><addtitle>Polym Eng Sci</addtitle><description>The nucleated isotactic polypropylene (iPP) was molded by water‐assisted injection molding. The crystalline morphology and orientation distribution were studied. The results show that shear brought by melt filling and pressurized water penetration can separately induce the formation of oriented structures in skin region (i.e., the region near mold cavity wall) and the water channel region. For virgin iPP, slightly oriented lamellae appear exclusively in the above aforementioned regions. However, shish‐kebab structure occurs not only in skin and water channel region of the iPP containing moderate content of nucleator (0.2 wt%) but also in the whole region of the iPP containing a higher content of nucleator (1 wt%). It is well known that nucleator cannot directly induce the development of shish‐kebab in the absence of shear, thus the results indicate: shear flow actually distributes over a much broader range than expected; in shear field, nucleator is significantly helpful for the shear which is not sufficient to solely induce oriented structure to promote the formation of the oriented structure. POLYM. ENG. SCI., 2012. © 2012 Society of Plastics Engineers</description><subject>Applied sciences</subject><subject>Chemical properties</subject><subject>Exact sciences and technology</subject><subject>Injection molding</subject><subject>Morphology</subject><subject>Nucleation</subject><subject>Physicochemistry of polymers</subject><subject>Polymer industry, paints, wood</subject><subject>Polymers</subject><subject>Polypropylene</subject><subject>Production processes</subject><subject>Technology of polymers</subject><issn>0032-3888</issn><issn>1548-2634</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><sourceid>N95</sourceid><recordid>eNp1kl1r2zAUhs1YYVm6i_0Dw9jFYE5lybLly1KStNB1Xx27FIo-HGWO7Eoybf_9jpusWyDDF4bj532Ejt8keZujWY4QPuu1m2GMavoimeS0YBkuSfEymSBEcEYYY6-S1yFsELCE1pNEzt1aOKlV2nmrXRTRdi7tTBrXOr0XUftMhGBDBMK6jZbj92zbtWoc9D0Mn9De66DBM0bdIFsNItekogHnaXJiRBv0m_17mvxYzG8vLrPrz8uri_PrTJaoolmpVIGUUAWpdV4YhA3FCiOKc1GxmtSI5FTRfFUTVRUrgRVFoqwZQhVjRhpFpsm7nbf33d2gQ-SbbvAOjuR5UZdlASryl2pEq7l1poteyK0Nkp9jRsFYw26mSXaEgttoL9rOaWNhfMDPjvDwKL218mjgw0EAmKgfYiOGEPjV92-H7Md_2NUQrNPwU1ywzTqGXeSYWvouBK8N773dCv_Ic8THlnBoCX9qCbDv9zsTQYrWeCiDDc8BTEtaYFICd7bj7uEej_8X8i_zmz_m_QbH8jw8J4T_xcuKVJT_vFny2-XXxYJ9ovyS_AYGQtb0</recordid><startdate>201204</startdate><enddate>201204</enddate><creator>Zheng, Guo-Qiang</creator><creator>Jia, Zhenhua</creator><creator>Liu, Xianhu</creator><creator>Liu, Baochen</creator><creator>Zhang, Xiaoli</creator><creator>Dai, Kun</creator><creator>Shao, Chunguang</creator><creator>Zheng, Xuejing</creator><creator>Liu, Chuntai</creator><creator>Cao, Wei</creator><creator>Chen, Jingbo</creator><creator>Peng, Xiangfang</creator><creator>Li, Qian</creator><creator>Shen, Changyu</creator><general>Wiley Subscription Services, Inc., A Wiley Company</general><general>Wiley</general><general>Society of Plastics Engineers, Inc</general><general>Blackwell Publishing Ltd</general><scope>BSCLL</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>N95</scope><scope>XI7</scope><scope>ISR</scope><scope>7SR</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>201204</creationdate><title>Enhanced orientation of the water-assisted injection-molded ipp in the presence of nucleating agent</title><author>Zheng, Guo-Qiang ; 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The crystalline morphology and orientation distribution were studied. The results show that shear brought by melt filling and pressurized water penetration can separately induce the formation of oriented structures in skin region (i.e., the region near mold cavity wall) and the water channel region. For virgin iPP, slightly oriented lamellae appear exclusively in the above aforementioned regions. However, shish‐kebab structure occurs not only in skin and water channel region of the iPP containing moderate content of nucleator (0.2 wt%) but also in the whole region of the iPP containing a higher content of nucleator (1 wt%). It is well known that nucleator cannot directly induce the development of shish‐kebab in the absence of shear, thus the results indicate: shear flow actually distributes over a much broader range than expected; in shear field, nucleator is significantly helpful for the shear which is not sufficient to solely induce oriented structure to promote the formation of the oriented structure. POLYM. ENG. SCI., 2012. © 2012 Society of Plastics Engineers</abstract><cop>Hoboken</cop><pub>Wiley Subscription Services, Inc., A Wiley Company</pub><doi>10.1002/pen.22095</doi><tpages>8</tpages></addata></record> |
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| source | Wiley Online Library Journals Frontfile Complete |
| subjects | Applied sciences Chemical properties Exact sciences and technology Injection molding Morphology Nucleation Physicochemistry of polymers Polymer industry, paints, wood Polymers Polypropylene Production processes Technology of polymers |
| title | Enhanced orientation of the water-assisted injection-molded ipp in the presence of nucleating agent |
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