Jin Jing Liew, Nurul Hayati Yusof, Desmond Teck-Chye Ang
{"title":"用液态环氧化天然橡胶增强聚氯乙烯的柔韧性和耐久性：减轻增塑剂迁移的创新型紫外线处理方法","authors":"Jin Jing Liew, Nurul Hayati Yusof, Desmond Teck-Chye Ang","doi":"10.1002/vnl.22147","DOIUrl":null,"url":null,"abstract":"<div>\n \n \n <section>\n \n <p>This manuscript elucidates the preparation and utilization of liquid epoxidized natural rubber (LENR) with 50 mol% epoxidation level (LENR50) as a polymeric plasticizer for poly(vinyl chloride) (PVC), and further immobilization of the plasticizer in the plastic matrix through subsequent ultraviolet (UV)-curing treatment. The plasticizing effect induced by LENR50 at 50 wt% loading was evident with a reduction of <i>T</i><sub>g</sub> from a high of 72.0 to 11.4°C. Positive enhancements were also documented in the mechanical properties of the LENR50-plasticized PVC, specifically the big improvement in elongation at break and elastic modulus, from 106% to 430%, and from 646 to 7 MPa, respectively. The UV-treated PVC/LENR film also exhibited superior resistance to migration compared with formulations with conventional plasticizers such as di-2-ethylhexyl phthalate (DEHP) and triethyl-2-acetyl citrate (ATEC). A similar outcome was recorded in the leaching resistance test, where LENR50 had the best resistance to leaching in four different solvents (water, soap solution, ethanol, and toluene). The LENR50-plasticized PVC film recorded the lowest weight loss following 24 h immersion in both hydrophilic and lipophilic solvents. The findings from this study suggest that LENR50 could serve as an efficient bio-based polymeric plasticizer for PVC.</p>\n </section>\n \n <section>\n \n <h3> Highlights</h3>\n \n <div>\n <ul>\n \n <li>LENR as bio-based polymeric plasticizer for PVC.</li>\n \n <li>Significant reduction in <i>T</i><sub>g</sub> and elastic modulus of PVC plasticized with LENR.</li>\n \n <li>UV treatment improved tensile strength and elongation at break of LENR/PVC film.</li>\n \n <li>UV-treated PVC/LENR has superior plasticizer migration and leaching resistance.</li>\n </ul>\n </div>\n </section>\n </div>","PeriodicalId":17662,"journal":{"name":"Journal of Vinyl & Additive Technology","volume":"30 6","pages":"1635-1649"},"PeriodicalIF":3.8000,"publicationDate":"2024-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Enhancing flexibility and durability of PVC with liquid epoxidized natural rubber: Innovative UV treatment to mitigate plasticizer migration\",\"authors\":\"Jin Jing Liew, Nurul Hayati Yusof, Desmond Teck-Chye Ang\",\"doi\":\"10.1002/vnl.22147\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div>\\n \\n \\n <section>\\n \\n <p>This manuscript elucidates the preparation and utilization of liquid epoxidized natural rubber (LENR) with 50 mol% epoxidation level (LENR50) as a polymeric plasticizer for poly(vinyl chloride) (PVC), and further immobilization of the plasticizer in the plastic matrix through subsequent ultraviolet (UV)-curing treatment. The plasticizing effect induced by LENR50 at 50 wt% loading was evident with a reduction of <i>T</i><sub>g</sub> from a high of 72.0 to 11.4°C. Positive enhancements were also documented in the mechanical properties of the LENR50-plasticized PVC, specifically the big improvement in elongation at break and elastic modulus, from 106% to 430%, and from 646 to 7 MPa, respectively. The UV-treated PVC/LENR film also exhibited superior resistance to migration compared with formulations with conventional plasticizers such as di-2-ethylhexyl phthalate (DEHP) and triethyl-2-acetyl citrate (ATEC). A similar outcome was recorded in the leaching resistance test, where LENR50 had the best resistance to leaching in four different solvents (water, soap solution, ethanol, and toluene). The LENR50-plasticized PVC film recorded the lowest weight loss following 24 h immersion in both hydrophilic and lipophilic solvents. 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Enhancing flexibility and durability of PVC with liquid epoxidized natural rubber: Innovative UV treatment to mitigate plasticizer migration
This manuscript elucidates the preparation and utilization of liquid epoxidized natural rubber (LENR) with 50 mol% epoxidation level (LENR50) as a polymeric plasticizer for poly(vinyl chloride) (PVC), and further immobilization of the plasticizer in the plastic matrix through subsequent ultraviolet (UV)-curing treatment. The plasticizing effect induced by LENR50 at 50 wt% loading was evident with a reduction of Tg from a high of 72.0 to 11.4°C. Positive enhancements were also documented in the mechanical properties of the LENR50-plasticized PVC, specifically the big improvement in elongation at break and elastic modulus, from 106% to 430%, and from 646 to 7 MPa, respectively. The UV-treated PVC/LENR film also exhibited superior resistance to migration compared with formulations with conventional plasticizers such as di-2-ethylhexyl phthalate (DEHP) and triethyl-2-acetyl citrate (ATEC). A similar outcome was recorded in the leaching resistance test, where LENR50 had the best resistance to leaching in four different solvents (water, soap solution, ethanol, and toluene). The LENR50-plasticized PVC film recorded the lowest weight loss following 24 h immersion in both hydrophilic and lipophilic solvents. The findings from this study suggest that LENR50 could serve as an efficient bio-based polymeric plasticizer for PVC.
Highlights
LENR as bio-based polymeric plasticizer for PVC.
Significant reduction in Tg and elastic modulus of PVC plasticized with LENR.
UV treatment improved tensile strength and elongation at break of LENR/PVC film.
UV-treated PVC/LENR has superior plasticizer migration and leaching resistance.
期刊介绍：
Journal of Vinyl and Additive Technology is a peer-reviewed technical publication for new work in the fields of polymer modifiers and additives, vinyl polymers and selected review papers. Over half of all papers in JVAT are based on technology of additives and modifiers for all classes of polymers: thermoset polymers and both condensation and addition thermoplastics. Papers on vinyl technology include PVC additives.
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