Synthesis and properties of biodegradable hydrogels based on cross-linked natural rubber and cassava starch
In: Journal of Elastomers & Plastics, Jg. 49 (2016-11-07), S. 574-594
Online
unknown
Zugriff:
A series of interpenetrating polymer network (IPN) hydrogels based on cross-linked natural rubber (XNR) and cassava starch (CSt) as biodegradable membrane material were synthesized via free radical polymerization in latex state using N, N′-methylene bisacrylamide (MBA) and maleic acid as cross-linkers. The IPN XNR/CSt hydrogels were confirmed and characterized by infrared spectroscopy, thermal analysis, and X-ray diffraction. The results showed that with increasing MBA content from 1.0 to 2.5 phr, cross-link density and gel fraction of XNR increased from 0.80 to 0.90 mol M−3 and from 19.7% to 30.5%, respectively. The gel fraction and tensile strength of the IPN XNR/CSt hydrogels also gradually increased as a function of MBA content but the water swelling and elongation at break decreased slightly. The IPN XNR/CSt containing 1.0 phr MBA displayed the highest water swelling of 82%. The weight retentions of IPN XNR/CSt hydrogels after soil degradations for 90 days increased from 48% to 56% with increasing MBA from 1.0 phr to 2.5 phr. The IPN XNR/CSt exhibited not only a good biodegradation but also high mechanical strength and flexibility. Also, the IPN XNR/CSt could be a promising candidate as a biodegradable membrane for longer released fertilizer application.
Titel: |
Synthesis and properties of biodegradable hydrogels based on cross-linked natural rubber and cassava starch
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Autor/in / Beteiligte Person: | Saengsuwan, Sayant ; Vudjung, Chaiwute |
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Zeitschrift: | Journal of Elastomers & Plastics, Jg. 49 (2016-11-07), S. 574-594 |
Veröffentlichung: | SAGE Publications, 2016 |
Medientyp: | unknown |
ISSN: | 1530-8006 (print) ; 0095-2443 (print) |
DOI: | 10.1177/0095244316676868 |
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