Premium
Surface‐grafting of ground rubber tire by poly acrylic acid via self‐initiated free radical polymerization and composites with epoxy thereof
Author(s) -
Yagneswaran Sriram,
Storer William J.,
Tomar Neetu,
Chaur Manuel N.,
Echegoyen Luis,
Smith Dennis W.
Publication year - 2013
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.22484
Subject(s) - epoxy , materials science , thermogravimetric analysis , composite material , acrylic acid , natural rubber , polymerization , dynamic mechanical analysis , fourier transform infrared spectroscopy , scanning electron microscope , composite number , polymer chemistry , chemical engineering , polymer , copolymer , engineering
Commercially available recycled ground rubber tire (GRT) particles, found to contain persistent mechano‐free radicals confirmed by electron paramagnetic spectroscopy for the first time self‐initiates free radical polymerization of acrylic acid (AA). The poly acrylic acid (PAA) grafted GRT (PAA‐ g ‐GRT) was confirmed by Attenuated Total Reflection Fourier Transform Infrared spectroscopy, X‐ray photoelectron spectroscopy, and thermogravimetric analysis (TGA). Epoxy composites using the PAA‐ g ‐GRT as filler were prepared and their mechanical properties were studied. The PAA‐ g ‐GRT/epoxy composite showed higher mechanical properties with an increase of modulus up to 180% as compared with the neat GRT/epoxy composite. Surface morphology of GRT, neat GRT/epoxy, and PAA‐ g ‐GRT/epoxy composites were analyzed by scanning electron microscopy. This technology introduces a new concept to functional and reactive recycling and the cost effective utilization of renewable resource green materials. POLYM. COMPOS., 2013. © 2013 Society of Plastics Engineers