期刊
JOURNAL OF APPLIED POLYMER SCIENCE
卷 106, 期 4, 页码 2485-2493出版社
JOHN WILEY & SONS INC
DOI: 10.1002/app.26755
关键词
films; mechanical properties; resistant starch; crosslinking
We report on the physical properties of films synthesized with native corn starch (NCS) and resistant starch (RS4) prepared with NCS. NCS and RS4/poly(- vinyl alcohol) (PVA) blend films were synthesized with a mixing process and casting method. Glycerol (GL) and citric acid (CA) were used as additives. Glutaraldehyde (GLU) was used as a crosslinking agent of the films. RS4 was synthesized with sodium trimetaphosphate and sodium tripolyphosphate as a crosslinker. Then, the RS4 thus synthesized was confirmed by the pancreatin-gravimetry method, swelling power, differential scanning calorimetry, and X-ray diffraction. The tensile strength, elongation, swelling behavior, and solubility of the films were measured. The results of the measurements indicated that the RS4-added film was better than the NCS-added film. In particular, the RS4/PVA blend film with CA as an additive showed physical properties superior to those of the other films. Also, the physical properties with GLU added as a crosslinking agent to the films were investigated. With increasing GLU contents, the tensile strength increased but the elongation, swelling behavior, and solubility values of the GL-added and CA-added films decreased. (c) 2007 Wiley Periodicals.
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