Synthesis of maleic anhydride grafted polyethylene and polypropylene, with controlled molecular structures

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Abstract

This article discusses a new chemical route to prepare maleic anhydride (MA) grafted polyethylene and polypropylene polymers with controlled molecular structure, that is, MA grafted content and polymer molecular weight and composition distributions. The chemistry involves a free radical graft reaction of maleic anhydride with poly(ethylene-co-p-methylstyrene) and poly(propylene-co-p-methylstyrene) copolymers. Under a suspension reaction condition, the grafting reaction takes place selectively on the p-methylstyrene units in the copolymer, due to high reactivity of p-methyl group and favorable mixing between p-methylstyrene units and chemical reagents in the swollen amorphous phases. The resulting polymer shows no detectable molecular weight change during the reaction, and the MA grafted content increases with the increase of initiator and p-methylstyrene concentrations.

Original languageEnglish (US)
Pages (from-to)1337-1343
Number of pages7
JournalJournal of Polymer Science, Part A: Polymer Chemistry
Volume38
Issue number8
DOIs
StatePublished - Apr 15 2000

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Maleic Anhydrides
Polypropylenes
Maleic anhydride
Polyethylene
Molecular structure
Polyethylenes
Polymers
Copolymers
Molecular weight
Free radicals
Grafts
Ethylene
Free Radicals
Suspensions
vinyltoluene
Chemical analysis

All Science Journal Classification (ASJC) codes

  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry

Cite this

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abstract = "This article discusses a new chemical route to prepare maleic anhydride (MA) grafted polyethylene and polypropylene polymers with controlled molecular structure, that is, MA grafted content and polymer molecular weight and composition distributions. The chemistry involves a free radical graft reaction of maleic anhydride with poly(ethylene-co-p-methylstyrene) and poly(propylene-co-p-methylstyrene) copolymers. Under a suspension reaction condition, the grafting reaction takes place selectively on the p-methylstyrene units in the copolymer, due to high reactivity of p-methyl group and favorable mixing between p-methylstyrene units and chemical reagents in the swollen amorphous phases. The resulting polymer shows no detectable molecular weight change during the reaction, and the MA grafted content increases with the increase of initiator and p-methylstyrene concentrations.",
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AU - Chung, Tze-chiang

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N2 - This article discusses a new chemical route to prepare maleic anhydride (MA) grafted polyethylene and polypropylene polymers with controlled molecular structure, that is, MA grafted content and polymer molecular weight and composition distributions. The chemistry involves a free radical graft reaction of maleic anhydride with poly(ethylene-co-p-methylstyrene) and poly(propylene-co-p-methylstyrene) copolymers. Under a suspension reaction condition, the grafting reaction takes place selectively on the p-methylstyrene units in the copolymer, due to high reactivity of p-methyl group and favorable mixing between p-methylstyrene units and chemical reagents in the swollen amorphous phases. The resulting polymer shows no detectable molecular weight change during the reaction, and the MA grafted content increases with the increase of initiator and p-methylstyrene concentrations.

AB - This article discusses a new chemical route to prepare maleic anhydride (MA) grafted polyethylene and polypropylene polymers with controlled molecular structure, that is, MA grafted content and polymer molecular weight and composition distributions. The chemistry involves a free radical graft reaction of maleic anhydride with poly(ethylene-co-p-methylstyrene) and poly(propylene-co-p-methylstyrene) copolymers. Under a suspension reaction condition, the grafting reaction takes place selectively on the p-methylstyrene units in the copolymer, due to high reactivity of p-methyl group and favorable mixing between p-methylstyrene units and chemical reagents in the swollen amorphous phases. The resulting polymer shows no detectable molecular weight change during the reaction, and the MA grafted content increases with the increase of initiator and p-methylstyrene concentrations.

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