{"title":"使用齐格勒-纳塔催化剂工业合成具有 H 型长链分支结构的线性低密度聚乙烯","authors":"Bingyu Zhang, Fengtao Chen, Jin-Yong Dong","doi":"10.1002/mren.202400044","DOIUrl":null,"url":null,"abstract":"<p>A novel linear low-density polyethylene containing H-shape long-chain-branching structures (LCB-LLDPE) is industrially synthesized with Ziegler-Natta catalysts and gas-phase polymerization process at the assistance of <i>ω</i>-alkenylmethyldichlorosilane copolymerization-hydrolysis chemistry. The incorporated LCB structures are characterized by NMR, SEC, and SAOS (small amplitude oscillatory shear) measurements. With a same-sourced plain LLDPE as a comparison benchmark, the new LCB-LLDPE is studied for its properties on various aspects, revealing, among others, significantly reinforced rheological properties, including enhanced shear-thinning behavior, a significant strain-hardening phenomenon in extensional flow, and substantially increased melt strength, as well as significantly improved optical properties, which all benefit its application in extrusion blow molding for thin-film production.</p>","PeriodicalId":18052,"journal":{"name":"Macromolecular Reaction Engineering","volume":"19 2","pages":""},"PeriodicalIF":1.8000,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Industrial Synthesis of Linear Low-Density Polyethylene with H-Shape Long-Chain-Branching Structures Using Ziegler-Natta Catalysts\",\"authors\":\"Bingyu Zhang, Fengtao Chen, Jin-Yong Dong\",\"doi\":\"10.1002/mren.202400044\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>A novel linear low-density polyethylene containing H-shape long-chain-branching structures (LCB-LLDPE) is industrially synthesized with Ziegler-Natta catalysts and gas-phase polymerization process at the assistance of <i>ω</i>-alkenylmethyldichlorosilane copolymerization-hydrolysis chemistry. The incorporated LCB structures are characterized by NMR, SEC, and SAOS (small amplitude oscillatory shear) measurements. With a same-sourced plain LLDPE as a comparison benchmark, the new LCB-LLDPE is studied for its properties on various aspects, revealing, among others, significantly reinforced rheological properties, including enhanced shear-thinning behavior, a significant strain-hardening phenomenon in extensional flow, and substantially increased melt strength, as well as significantly improved optical properties, which all benefit its application in extrusion blow molding for thin-film production.</p>\",\"PeriodicalId\":18052,\"journal\":{\"name\":\"Macromolecular Reaction Engineering\",\"volume\":\"19 2\",\"pages\":\"\"},\"PeriodicalIF\":1.8000,\"publicationDate\":\"2024-12-20\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Macromolecular Reaction Engineering\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1002/mren.202400044\",\"RegionNum\":4,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"ENGINEERING, CHEMICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Macromolecular Reaction Engineering","FirstCategoryId":"5","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/mren.202400044","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
Industrial Synthesis of Linear Low-Density Polyethylene with H-Shape Long-Chain-Branching Structures Using Ziegler-Natta Catalysts
A novel linear low-density polyethylene containing H-shape long-chain-branching structures (LCB-LLDPE) is industrially synthesized with Ziegler-Natta catalysts and gas-phase polymerization process at the assistance of ω-alkenylmethyldichlorosilane copolymerization-hydrolysis chemistry. The incorporated LCB structures are characterized by NMR, SEC, and SAOS (small amplitude oscillatory shear) measurements. With a same-sourced plain LLDPE as a comparison benchmark, the new LCB-LLDPE is studied for its properties on various aspects, revealing, among others, significantly reinforced rheological properties, including enhanced shear-thinning behavior, a significant strain-hardening phenomenon in extensional flow, and substantially increased melt strength, as well as significantly improved optical properties, which all benefit its application in extrusion blow molding for thin-film production.
期刊介绍：
Macromolecular Reaction Engineering is the established high-quality journal dedicated exclusively to academic and industrial research in the field of polymer reaction engineering.
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