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Preparation and characterization of henequen cellulose grafted with methyl methacrylate and its application in composites
Author(s) -
CanchéEscamilla G.,
RodríguezTrujillo G.,
HerreraFranco P. J.,
Mendizábal E.,
Puig J. E.
Publication year - 1997
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/(sici)1097-4628(19971010)66:2<339::aid-app14>3.0.co;2-t
Subject(s) - cellulose , materials science , monomer , polymer chemistry , grafting , methyl methacrylate , composite material , polymerization , ultimate tensile strength , polymer , chemistry , organic chemistry
The grafting polymerization of methyl methacrylate (MMA) and cellulose from henequen ( Agave fourcroydes ) is investigated as a function of the initiator concentration (cerium‐and‐ammonium nitrate) and the monomer/cellulose ratio. The formation of cellulose‐ g ‐PMMA is confirmed by IR spectroscopy, DSC, and TGA. Both the initiator concentration and the MMA/cellulose ratio have a strong influence over the grafting parameters and over the molecular weight of the grafted PMMA. A higher initiator concentration and a lower monomer/cellulose ratio result in a lower molecular weight of the grafted polymer. Increasing the amount and the molecular weight of the grafted PMMA increases the compatibility of the fibers with SAN and PVC, as demonstrated by a mechanical test and scanning electron microscopy. SAN and PVC composites made with grafted cellulose exhibit higher flexural and tensile moduli, respectively, than those produced with the ungrafted fibers. Both moduli increase as the amount of reinforcement increases. © 1997 John Wiley & Sons, Inc. J Appl Polym Sci 66: 339–346, 1997