Crosslinking of Polyvinyl Alcohol (PVA) and Effect of Crosslinker Shape (Aliphatic and Aromatic) Thereof
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In the presented work, the effect of crosslinker geometry on the properties of PVA is reported. The aliphatic (suberic) and aromatic (terephthalic) dicarboxylic acids are used as crosslinker molecules. On the basis of tensile test and thermal properties, it is observed that crosslinking of PVA by suberic acid is more effective than terephthalic acid. The maximum strength measured in crosslinked samples is 32.5 MPa for suberic acid crosslinked PVA which is higher than that of neat PVA (22.6 MPa). Swelling study shows that 8 h crosslinked terephthalic acid (35% w/w) samples have a minimum of 5.4% of water uptake compared to neat PVA, which dissolves readily in water. DTGA shows that the decomposition temperature of crosslinked PVA is 345 °C while neat PVA has a decomposition temperature of 315 °C. FTIR spectroscopy confirms the formation of crosslink ester bond in crosslinked PVA. The crosslinked samples kept for bio-degradation show maximum degradation in terephthalic acid (15% w/w) crosslinked PVA.
KeywordsCrosslinking Swelling Mechanical properties Thermal properties Biodegradation
RKN thanks the Department of Science & Technology (DST), Government of India, for Ramanujan Fellowship (SR/S2/RJN-18/2011) award. The work is funded by Science and Engineering Research Board (SERB) SR/S3/CE/038/2012 granted to VV.
- 1.Horii F, Masuda K (1998) Chap. 19 Hydrogen-bonded polymers. In: Isao A, Tetsou A (eds) Studies in physical and theoretical chemistry, vol 84. Elsevier, Amsterdam, pp 713–736Google Scholar
- 2.Earl PA (1965) Polyvinyl acetate and polyvinyl alcohol adhesives. US3213051 A (US patent)Google Scholar
- 6.Oshima K, Iwasaki S (1990) Pneumatic radial tires with a folded belt and high strength vinylon fiber cords. US4971127 A (US patent)Google Scholar
- 8.Heydari M, Moheb A, Ghiaci M, Masoomi M (2013) Effect of crosslinking time on the thermal and mechanical properties and pervaporation performance of poly(vinyl alcohol) membrane crosslinked with fumaric acid used for dehydration of isopropanol. J Appl Polym Sci 128(3):1640–1651Google Scholar
- 13.Ichimura K, Watanabe S (1982) Preparation and characteristics of photocrosslinkable poly(vinyl alcohol). J Polym Sci 20(6):1419–1432Google Scholar
- 14.Ichimura K (1982) Preparation of water-soluble photoresist derived from poly(vinyl alcohol). J Polym Sci 20(6):1411–1417Google Scholar
- 16.Suzuki T, Ichihara Y, Yamada M, Tonomura K (1973) Some characteristics of Pseudomonas 0–3 which utilizes polyvinyl alcohol. Agric Biol Chem 37(4):747–756Google Scholar
- 23.Wang X, Fang D, Yoon K, Hsiao BS, Chu B (2006) High performance ultrafiltration composite membranes based on poly(vinyl alcohol) hydrogel coating on crosslinked nanofibrous poly(vinyl alcohol) scaffold. J Membr Sci 278(1–2):261–268Google Scholar
- 43.Ganji F, Vasheghani-Farahani S, Vasheghani-Farahani E (2010) Theoretical description of hydrogel swelling: a review. Iran Polym J 19(5):375–398Google Scholar