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The biodegradability of polyester blends
Blends of poly (ε-caprolactone) (PCL) and poly ( l-lactic acid) (PLLA) with polyglycolic acid-co- l-lactic acid (PGLA) were prepared by three methods: compression moulding, coprecipitation and solvent evaporation of a methylene chloride-in-water emulsion of the polymers. The rates of hydrolytic chai...
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Published in: | Biomaterials 1990-03, Vol.11 (2), p.108-112 |
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container_title | Biomaterials |
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creator | Cha, Y. Pitt, C.G. |
description | Blends of poly (ε-caprolactone) (PCL) and poly (
l-lactic acid) (PLLA) with polyglycolic acid-co-
l-lactic acid (PGLA) were prepared by three methods: compression moulding, coprecipitation and solvent evaporation of a methylene chloride-in-water emulsion of the polymers. The rates of hydrolytic chain scission of each component of the blends were determined by deconvolution of GPC traces of samples maintained in phosphate buffer, pH 7.4, 37°C, for up to 3000 h. The observed rates were dependent on the method of blending. For compression moulded blends, the rate of chain scission of PGLA was decreased and that of PCL and PLLA increased. A corresponding delay in the onset of weight loss was also observed. There was no evidence of blend miscibility. |
doi_str_mv | 10.1016/0142-9612(90)90124-9 |
format | article |
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l-lactic acid) (PLLA) with polyglycolic acid-co-
l-lactic acid (PGLA) were prepared by three methods: compression moulding, coprecipitation and solvent evaporation of a methylene chloride-in-water emulsion of the polymers. The rates of hydrolytic chain scission of each component of the blends were determined by deconvolution of GPC traces of samples maintained in phosphate buffer, pH 7.4, 37°C, for up to 3000 h. The observed rates were dependent on the method of blending. For compression moulded blends, the rate of chain scission of PGLA was decreased and that of PCL and PLLA increased. A corresponding delay in the onset of weight loss was also observed. There was no evidence of blend miscibility.</description><identifier>ISSN: 0142-9612</identifier><identifier>EISSN: 1878-5905</identifier><identifier>DOI: 10.1016/0142-9612(90)90124-9</identifier><identifier>PMID: 2317532</identifier><language>eng</language><publisher>Netherlands: Elsevier Ltd</publisher><subject>Biodegradation ; Biodegradation, Environmental ; gel permeation chromatography ; Hydrolysis ; Materials Testing ; Molecular Weight ; poly (ϵ-caprolactone) ; poly( l-lactic acid) ; Polyesters ; polyglycolic acid-co- l-lactic acid ; polymer blends</subject><ispartof>Biomaterials, 1990-03, Vol.11 (2), p.108-112</ispartof><rights>1990</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c388t-a7a814179c5b848a51ef210e434129800a6354d16f1713613d96d077b7e3858d3</citedby><cites>FETCH-LOGICAL-c388t-a7a814179c5b848a51ef210e434129800a6354d16f1713613d96d077b7e3858d3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/0142961290901249$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3555,27924,27925,46004</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/2317532$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Cha, Y.</creatorcontrib><creatorcontrib>Pitt, C.G.</creatorcontrib><title>The biodegradability of polyester blends</title><title>Biomaterials</title><addtitle>Biomaterials</addtitle><description>Blends of poly (ε-caprolactone) (PCL) and poly (
l-lactic acid) (PLLA) with polyglycolic acid-co-
l-lactic acid (PGLA) were prepared by three methods: compression moulding, coprecipitation and solvent evaporation of a methylene chloride-in-water emulsion of the polymers. The rates of hydrolytic chain scission of each component of the blends were determined by deconvolution of GPC traces of samples maintained in phosphate buffer, pH 7.4, 37°C, for up to 3000 h. The observed rates were dependent on the method of blending. For compression moulded blends, the rate of chain scission of PGLA was decreased and that of PCL and PLLA increased. A corresponding delay in the onset of weight loss was also observed. There was no evidence of blend miscibility.</description><subject>Biodegradation</subject><subject>Biodegradation, Environmental</subject><subject>gel permeation chromatography</subject><subject>Hydrolysis</subject><subject>Materials Testing</subject><subject>Molecular Weight</subject><subject>poly (ϵ-caprolactone)</subject><subject>poly( l-lactic acid)</subject><subject>Polyesters</subject><subject>polyglycolic acid-co- l-lactic acid</subject><subject>polymer blends</subject><issn>0142-9612</issn><issn>1878-5905</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1990</creationdate><recordtype>article</recordtype><recordid>eNp9UEtLAzEQDqLUWv0HCnuSeljN5LFJLoIUX1DwUs8hu5nVyLZbk62w_96tLT16GobvMfN9hFwCvQUKxR0FwXJTAJsaemMoMJGbIzIGrXQuDZXHZHygnJKzlL7osFPBRmTEOCjJ2ZhMF5-YlaH1-BGdd2VoQtdnbZ2t26bH1GHMygZXPp2Tk9o1CS_2c0Lenx4Xs5d8_vb8OnuY5xXXusudchoEKFPJUgvtJGDNgKLgApjRlLqCS-GhqEEBL4B7U3iqVKmQa6k9n5Drne86tt-b4QO7DKnCpnErbDfJMikVKwwbiGJHrGKbUsTarmNYuthboHZbkN2mt9v01lD7V5A1g-xq778pl-gPon0jA36_w3EI-RMw2lQFXFXoQ8Sqs74N_x_4BfGgcbs</recordid><startdate>19900301</startdate><enddate>19900301</enddate><creator>Cha, Y.</creator><creator>Pitt, C.G.</creator><general>Elsevier Ltd</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>F28</scope><scope>FR3</scope></search><sort><creationdate>19900301</creationdate><title>The biodegradability of polyester blends</title><author>Cha, Y. ; Pitt, C.G.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c388t-a7a814179c5b848a51ef210e434129800a6354d16f1713613d96d077b7e3858d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1990</creationdate><topic>Biodegradation</topic><topic>Biodegradation, Environmental</topic><topic>gel permeation chromatography</topic><topic>Hydrolysis</topic><topic>Materials Testing</topic><topic>Molecular Weight</topic><topic>poly (ϵ-caprolactone)</topic><topic>poly( l-lactic acid)</topic><topic>Polyesters</topic><topic>polyglycolic acid-co- l-lactic acid</topic><topic>polymer blends</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Cha, Y.</creatorcontrib><creatorcontrib>Pitt, C.G.</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><jtitle>Biomaterials</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Cha, Y.</au><au>Pitt, C.G.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The biodegradability of polyester blends</atitle><jtitle>Biomaterials</jtitle><addtitle>Biomaterials</addtitle><date>1990-03-01</date><risdate>1990</risdate><volume>11</volume><issue>2</issue><spage>108</spage><epage>112</epage><pages>108-112</pages><issn>0142-9612</issn><eissn>1878-5905</eissn><abstract>Blends of poly (ε-caprolactone) (PCL) and poly (
l-lactic acid) (PLLA) with polyglycolic acid-co-
l-lactic acid (PGLA) were prepared by three methods: compression moulding, coprecipitation and solvent evaporation of a methylene chloride-in-water emulsion of the polymers. The rates of hydrolytic chain scission of each component of the blends were determined by deconvolution of GPC traces of samples maintained in phosphate buffer, pH 7.4, 37°C, for up to 3000 h. The observed rates were dependent on the method of blending. For compression moulded blends, the rate of chain scission of PGLA was decreased and that of PCL and PLLA increased. A corresponding delay in the onset of weight loss was also observed. There was no evidence of blend miscibility.</abstract><cop>Netherlands</cop><pub>Elsevier Ltd</pub><pmid>2317532</pmid><doi>10.1016/0142-9612(90)90124-9</doi><tpages>5</tpages></addata></record> |
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subjects | Biodegradation Biodegradation, Environmental gel permeation chromatography Hydrolysis Materials Testing Molecular Weight poly (ϵ-caprolactone) poly( l-lactic acid) Polyesters polyglycolic acid-co- l-lactic acid polymer blends |
title | The biodegradability of polyester blends |
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