Efficiency of Different Chain-Linking Agents in the Synthesis of Long-Chain Branched Polypropylene: Molecular, Thermal, and Rheological Characterization

被引：11

作者：

Guapacha, Jorge ^{[1
,2
]}

Valles, Enrique M. ^{[1
,2
]}

Failla, Marcelo D. ^{[1
,3
]}

Quinzani, Lidia M. ^{[1
,2
]}

机构：

[1] UNS CONICET, Planta Piloto Ingn Quim, Camino La Carrindanga Km 7, RA-8000 Bahia Blanca, Buenos Aires, Argentina

[2] Univ Nacl Sur, Dept Ingn Quim, Ave Alem 1253, RA-8000 Bahia Blanca, Buenos Aires, Argentina

[3] Univ Nacl Sur, Dept Ingn, Bahia Blanca, Buenos Aires, Argentina

来源：

POLYMER-PLASTICS TECHNOLOGY AND ENGINEERING | 2018年 / 57卷 / 12期

关键词：

Crosslinking; long-chain branched; polypropylene; structure-property relations; MELT-STRENGTH POLYPROPYLENE; DOUBLE HYDROXIDE NANOCOMPOSITES; REACTIVE EXTRUSION PROCESS; CRYSTALLIZATION BEHAVIORS; IRRADIATED POLYPROPYLENE; NONCONJUGATED DIENES; METALLOCENE CATALYST; ELECTRON-BEAM; SOLID-STATE; T-REAGENT;

D O I：

10.1080/03602559.2017.1373404

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Long-chain branched polypropylenes were synthesized from a maleic anhydride grafted polypropylene (PPg). Different levels of branching were generated by reactive processing using four chain-linking agents: glycerol, 1,4-butanediol, 1,4-phenylenediamine, and the epoxy resin bisphenol-A diglycidyl ether. The results from Fourier transform infrared and size-exclusion chromatography confirm the grafting of the chain-linking agents onto grafted polypropylene and the generation of long-chain branches. In addition, the rheological and morphological results show that 1,4-phenylenediamine produces the largest increment of branching at significantly lower concentrations than the other chain-linking agents. Moreover, 1,4-phenylenediamine gives place to branched polypropylenes with narrower distribution of molecular structures. [GRAPHICS] .

引用

页码：1209 / 1224

页数：16

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