Side chain extension of polypropylene by aliphatic diamine and isocyanate

A post-reaction modification of polypropylene by which to obtain increased melt strength is by reactive extrusion of randomly functionalized PP with polyfunctional monomers. In this study, reactive melt processing of maleated polypropylene (PP-g-MA) with poly[methylene (phenylene isocyanate)] (PMPI), hexamethylene diamine (HMDA), and poly(propylene glycol)-bis-(2-propylamine) (Jeffamine D-400) was carried out. The resulting chain-extended PP-g-MA was confirmed by FTR analysis. Its thermal and theological properties were also measured. HMDA and D-400 react with both the carboxylic acid and anhydride form of MA. Though PMPI only reacts with the carboxylic acid of MA, PP-g-MA reacted with PMPI has higher gel content and storage modulus compared to PP-g-MA reacted with the amine. This is because of the higher functionality of PMPI and localized reaction between the isocyanate in PMPI and the carboxylic acid in PP-g-MA.
Publisher
John Wiley & Sons Ltd.
Issue Date
2004-08
Language
ENG
Keywords

BLENDS

Citation

MACROMOLECULAR SYMPOSIA, v.214, pp.289 - 297

ISSN
1022-1360
DOI
10.1002/masy.200451021
URI
http://hdl.handle.net/10203/2282
Appears in Collection
CBE-Journal Papers(저널논문)
  • Hit : 386
  • Download : 45
  • Cited 0 times in thomson ci
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡClick to seewebofscience_button
⊙ Cited 9 items in WoSClick to see citing articles inrecords_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0