Journal
CARBOHYDRATE POLYMERS
Volume 208, Issue -, Pages 391-397Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2018.12.090
Keywords
Sodium alginate; Waterborne polyurethane; Castor oil; Interpenetrating networks
Categories
Funding
- Open Project of Jiangsu Key Laboratory for Biomass Energy and Materials [JSBEM201803]
- National Natural Science Foundation [51703068]
- Guangdong Province Science & Technology Program [2017A010103015, 2018B030306016]
- Program of the Science and Technology Department of Guangzhou, China [201803020039, 201707010343]
Ask authors/readers for more resources
In this paper, bio-based waterborne polyurethane dispersions were successfully prepared from castor oil using 2, 2-dimethylolbutanoic acid as the chain extender. Then, a series of bio-based composite dispersions and films were prepared by blending different amounts of sodium alginate aqueous solution with these bio-based polyurethane dispersions. The chemical structures, thermo-mechanical properties, thermal stability, and mechanical properties of the resulting composite films were characterized and discussed. The results show that the tensile strength and storage moduli of the composite films increase while the elongation at break of the composite films decrease with increasing the sodium alginate content. In addition, the contact angle and thermal stability of the composite films also increase with increasing sodium alginate content. These improvements are related to the increase of the crosslink density and the formation of interpenetrating networks with introduction of sodium alginate macromolecule.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available