Thermal, mechanical, rheological and morphological properties of compatible poly(lactic acid)/ethylene vinyl acetate blends
This paper examines the effects of poly (ethylene-co-vinyl acetate) (EVA) with 40% vinyl acetate content on thermal, mechanical, rheological, and morphological properties of polylactic acid (PLA) blends. Thermal analysis indicated improvement of crystallinity in the presence of more EVA. With 15% EV...
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| Veröffentlicht in: | Progress in rubber, plastics and recycling technology plastics and recycling technology, 2022-05, Vol.38 (2), p.172-187 |
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| creator | Johar, Munirah Zarkasi, Kamarul Zaman Hashim, Faiezah Rusli, Arjulizan |
| description | This paper examines the effects of poly (ethylene-co-vinyl acetate) (EVA) with 40% vinyl acetate content on thermal, mechanical, rheological, and morphological properties of polylactic acid (PLA) blends. Thermal analysis indicated improvement of crystallinity in the presence of more EVA. With 15% EVA, the impact strength of the binary blend increased significantly (37.80 KJ/m2) at an optimum elongation at break due to the compatibility of the blend and the formation of fibrils. In the presence of % EVA, complete phase separation with the formation of EVA droplets in the PLA continuous phase resulted in a reduction of impact strength and elongation at break. Changes in compatibility and morphology lead to variation in rheological properties. The complex viscosity (η*) decreased with increasing EVA content up to 10% EVA but slightly increased at 15% EVA due to optimum interphase interaction between components in the compatible blend. In the presence of more than 20% EVA, η* reduced again due to the occurrence of phase separation. The variations in the mechanical and rheological properties of PLA/EVA blends are directly related to the state of compatibility and morphology of the blends. |
| doi_str_mv | 10.1177/14777606221085988 |
| format | Article |
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Thermal analysis indicated improvement of crystallinity in the presence of more EVA. With 15% EVA, the impact strength of the binary blend increased significantly (37.80 KJ/m2) at an optimum elongation at break due to the compatibility of the blend and the formation of fibrils. In the presence of % EVA, complete phase separation with the formation of EVA droplets in the PLA continuous phase resulted in a reduction of impact strength and elongation at break. Changes in compatibility and morphology lead to variation in rheological properties. The complex viscosity (η*) decreased with increasing EVA content up to 10% EVA but slightly increased at 15% EVA due to optimum interphase interaction between components in the compatible blend. In the presence of more than 20% EVA, η* reduced again due to the occurrence of phase separation. The variations in the mechanical and rheological properties of PLA/EVA blends are directly related to the state of compatibility and morphology of the blends.</description><identifier>ISSN: 1477-7606</identifier><identifier>EISSN: 1478-2413</identifier><identifier>DOI: 10.1177/14777606221085988</identifier><language>eng</language><publisher>London, England: SAGE Publications</publisher><subject>Compatibility ; Cooling ; Crystallization ; Elongation ; Ethylene vinyl acetates ; Impact strength ; Morphology ; Phase separation ; Polylactic acid ; Polymer blends ; Polymers ; Rheological properties ; Rheology ; Thermal analysis</subject><ispartof>Progress in rubber, plastics and recycling technology, 2022-05, Vol.38 (2), p.172-187</ispartof><rights>The Author(s) 2022</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c242t-d8490c156664db911719bf9d1431cc8be215028a5c40348a65f23ab8b69d27253</citedby><cites>FETCH-LOGICAL-c242t-d8490c156664db911719bf9d1431cc8be215028a5c40348a65f23ab8b69d27253</cites><orcidid>0000-0001-9269-3972</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://journals.sagepub.com/doi/pdf/10.1177/14777606221085988$$EPDF$$P50$$Gsage$$H</linktopdf><linktohtml>$$Uhttps://journals.sagepub.com/doi/10.1177/14777606221085988$$EHTML$$P50$$Gsage$$H</linktohtml><link.rule.ids>314,776,780,21798,27901,27902,43597,43598</link.rule.ids></links><search><creatorcontrib>Johar, Munirah</creatorcontrib><creatorcontrib>Zarkasi, Kamarul Zaman</creatorcontrib><creatorcontrib>Hashim, Faiezah</creatorcontrib><creatorcontrib>Rusli, Arjulizan</creatorcontrib><title>Thermal, mechanical, rheological and morphological properties of compatible poly(lactic acid)/ethylene vinyl acetate blends</title><title>Progress in rubber, plastics and recycling technology</title><description>This paper examines the effects of poly (ethylene-co-vinyl acetate) (EVA) with 40% vinyl acetate content on thermal, mechanical, rheological, and morphological properties of polylactic acid (PLA) blends. Thermal analysis indicated improvement of crystallinity in the presence of more EVA. With 15% EVA, the impact strength of the binary blend increased significantly (37.80 KJ/m2) at an optimum elongation at break due to the compatibility of the blend and the formation of fibrils. In the presence of % EVA, complete phase separation with the formation of EVA droplets in the PLA continuous phase resulted in a reduction of impact strength and elongation at break. Changes in compatibility and morphology lead to variation in rheological properties. The complex viscosity (η*) decreased with increasing EVA content up to 10% EVA but slightly increased at 15% EVA due to optimum interphase interaction between components in the compatible blend. In the presence of more than 20% EVA, η* reduced again due to the occurrence of phase separation. The variations in the mechanical and rheological properties of PLA/EVA blends are directly related to the state of compatibility and morphology of the blends.</description><subject>Compatibility</subject><subject>Cooling</subject><subject>Crystallization</subject><subject>Elongation</subject><subject>Ethylene vinyl acetates</subject><subject>Impact strength</subject><subject>Morphology</subject><subject>Phase separation</subject><subject>Polylactic acid</subject><subject>Polymer blends</subject><subject>Polymers</subject><subject>Rheological properties</subject><subject>Rheology</subject><subject>Thermal analysis</subject><issn>1477-7606</issn><issn>1478-2413</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><recordid>eNp1UMtKxDAUDaLgOPoB7gJuFOxMkjaPLmXwBQNuxnVJ09tph7apSUYo_rytI7oQV_fcwznnPhC6pGRBqZRLmkgpBRGMUaJ4qtQRmo2cilhC4-MvLKNJcIrOvN8REvNUyhn62FTgWt3c4hZMpbvaTNhVYBu7nRqsuwK31vXVD9M724MLNXhsS2xs2-tQ5w3g3jbDdaNNqA3Wpi5ulhCqoYEO8HvdDWOWgaAD4FHcFf4cnZS68XDxXefo9eF-s3qK1i-Pz6u7dWRYwkJUqCQlhnIhRFLk6XguTfMyLWgSU2NUDoxywpTmJiFxorTgJYt1rnKRFkwyHs_R1SF3XPxtDz5kO7t33TgyY5JzQeJYpKOKHlTGWe8dlFnv6la7IaMkm36c_fnx6FkcPF5v4Tf1f8MnWrF8vA</recordid><startdate>20220501</startdate><enddate>20220501</enddate><creator>Johar, Munirah</creator><creator>Zarkasi, Kamarul Zaman</creator><creator>Hashim, Faiezah</creator><creator>Rusli, Arjulizan</creator><general>SAGE Publications</general><general>Sage Publications Ltd</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8FD</scope><scope>JG9</scope><orcidid>https://orcid.org/0000-0001-9269-3972</orcidid></search><sort><creationdate>20220501</creationdate><title>Thermal, mechanical, rheological and morphological properties of compatible poly(lactic acid)/ethylene vinyl acetate blends</title><author>Johar, Munirah ; Zarkasi, Kamarul Zaman ; Hashim, Faiezah ; Rusli, Arjulizan</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c242t-d8490c156664db911719bf9d1431cc8be215028a5c40348a65f23ab8b69d27253</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2022</creationdate><topic>Compatibility</topic><topic>Cooling</topic><topic>Crystallization</topic><topic>Elongation</topic><topic>Ethylene vinyl acetates</topic><topic>Impact strength</topic><topic>Morphology</topic><topic>Phase separation</topic><topic>Polylactic acid</topic><topic>Polymer blends</topic><topic>Polymers</topic><topic>Rheological properties</topic><topic>Rheology</topic><topic>Thermal analysis</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Johar, Munirah</creatorcontrib><creatorcontrib>Zarkasi, Kamarul Zaman</creatorcontrib><creatorcontrib>Hashim, Faiezah</creatorcontrib><creatorcontrib>Rusli, Arjulizan</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Progress in rubber, plastics and recycling technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Johar, Munirah</au><au>Zarkasi, Kamarul Zaman</au><au>Hashim, Faiezah</au><au>Rusli, Arjulizan</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Thermal, mechanical, rheological and morphological properties of compatible poly(lactic acid)/ethylene vinyl acetate blends</atitle><jtitle>Progress in rubber, plastics and recycling technology</jtitle><date>2022-05-01</date><risdate>2022</risdate><volume>38</volume><issue>2</issue><spage>172</spage><epage>187</epage><pages>172-187</pages><issn>1477-7606</issn><eissn>1478-2413</eissn><abstract>This paper examines the effects of poly (ethylene-co-vinyl acetate) (EVA) with 40% vinyl acetate content on thermal, mechanical, rheological, and morphological properties of polylactic acid (PLA) blends. Thermal analysis indicated improvement of crystallinity in the presence of more EVA. With 15% EVA, the impact strength of the binary blend increased significantly (37.80 KJ/m2) at an optimum elongation at break due to the compatibility of the blend and the formation of fibrils. In the presence of % EVA, complete phase separation with the formation of EVA droplets in the PLA continuous phase resulted in a reduction of impact strength and elongation at break. Changes in compatibility and morphology lead to variation in rheological properties. The complex viscosity (η*) decreased with increasing EVA content up to 10% EVA but slightly increased at 15% EVA due to optimum interphase interaction between components in the compatible blend. In the presence of more than 20% EVA, η* reduced again due to the occurrence of phase separation. The variations in the mechanical and rheological properties of PLA/EVA blends are directly related to the state of compatibility and morphology of the blends.</abstract><cop>London, England</cop><pub>SAGE Publications</pub><doi>10.1177/14777606221085988</doi><tpages>16</tpages><orcidid>https://orcid.org/0000-0001-9269-3972</orcidid></addata></record> |
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| ispartof | Progress in rubber, plastics and recycling technology, 2022-05, Vol.38 (2), p.172-187 |
| issn | 1477-7606 1478-2413 |
| language | eng |
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| source | SAGE Complete A-Z List |
| subjects | Compatibility Cooling Crystallization Elongation Ethylene vinyl acetates Impact strength Morphology Phase separation Polylactic acid Polymer blends Polymers Rheological properties Rheology Thermal analysis |
| title | Thermal, mechanical, rheological and morphological properties of compatible poly(lactic acid)/ethylene vinyl acetate blends |
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