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Hydrogel composites based on linear low‐density polyethylene‐g‐poly (acrylic acid)/Kaolin or halloysite nanotubes
Author(s) -
Irani Maryam,
Ismail Hanafi,
Ahmad Zulkifli
Publication year - 2014
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/app.40101
Subject(s) - halloysite , materials science , swelling , thermogravimetric analysis , acrylic acid , composite material , distilled water , self healing hydrogels , fourier transform infrared spectroscopy , composite number , polyethylene , low density polyethylene , emulsion polymerization , polymerization , polymer chemistry , chemical engineering , copolymer , chemistry , polymer , chromatography , engineering
ABSTRACT Two series of superabsorbent hydrogel composites were prepared using waste linear low‐density polyethylene, acrylic acid, and two types of clays including kaolin and halloysite nanotube (HNT) through emulsion polymerization. The effects of the clay content on Water absorbency were investigated to obtain a high swelling capacity. The prepared samples were characterized using FTIR, SEM, thermogravimetric analysis, XRD, solid‐state 13 C Nuclear Magnetic Resonance spectroscopy, and 29 Si NMR. SEM characterization of the samples showed that the hydrogel composites have more pores and a higher swelling ratio than the clay‐free hydrogels. The hydrogel composite containing kaolin had higher water absorbency compared to the hydrogel composites with HNT. The swelling behavior of the hydrogel composite was investigated in various saline solutions. The hydrogel composite containing 5 wt % kaolin had the highest water absorbency (760 g/g in distilled water). © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014 , 131 , 40101.