Preparation and evaluation of hydrophobic biodegradable films made from corn/octenylsuccinated starch incorporated with different concentrations of soybean oil

Wei Gao; Wen Wu; Pengfei Liu; Hanxue Hou; Xiangyang Li; Bo Cui

doi:10.1016/j.ijbiomac.2019.09.108

Preparation and evaluation of hydrophobic biodegradable films made from corn/octenylsuccinated starch incorporated with different concentrations of soybean oil

Int J Biol Macromol. 2020 Jan 1:142:376-383. doi: 10.1016/j.ijbiomac.2019.09.108. Epub 2019 Oct 5.

Authors

Wei Gao¹, Wen Wu², Pengfei Liu³, Hanxue Hou⁴, Xiangyang Li⁴, Bo Cui⁵

Affiliations

¹ State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Ji'nan 250353, China; School of Food Science and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, Shandong 250353, China; Department of Food Science and Engineering, Shandong Agricultural University, Tai'an, 271018, China.
² Department of Blood Transfusion, PLA 960 Hospital, Jinan 250031, China.
³ State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Ji'nan 250353, China; School of Food Science and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, Shandong 250353, China.
⁴ Department of Food Science and Engineering, Shandong Agricultural University, Tai'an, 271018, China.
⁵ State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Ji'nan 250353, China; School of Food Science and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, Shandong 250353, China. Electronic address: cuiborr@163.com.

PMID: 31593726
DOI: 10.1016/j.ijbiomac.2019.09.108

Abstract

Corn/octenylsuccinated starch (C/OS) composite films incorporated with soybean oil (SO) at 0, 0.5%, 1.0%, 1.5% and 2.0% (w/w) were prepared to investigate their physicochemical properties. Fourier transform infrared analysis indicated that low concentrations of SO could facilitate molecular interaction and the formation of hydrogen bonds between starch molecules. All the films exhibited similar diffractograms and lower relative crystallinity values. Scanning electron microscopy and atomicforcemicroscopy showed that the irregular and coarse surface structures of the films were obtained more frequently with increasing SO concentration. A higher contact angle of 76.14° and lower water vapor permeability of 2.46 × 10^-12 g cm/cm² s Pa were obtained with increasing SO content, with the exception of the 2.0% SO sample. The highest tensile strength value of 6.54 MPa was obtained by the C/OS-1.0% SO composite film, while the optimumelongation at break of 71.84% was exhibited by the C/OS-1.5% SO composite film.

Keywords: Corn starch; Octenylsuccinated starch; Soybean oil.

MeSH terms

Biocompatible Materials / chemistry*
Hydrophobic and Hydrophilic Interactions
Mechanical Phenomena
Membranes, Artificial*
Microscopy, Atomic Force
Microscopy, Electron, Scanning
Soybean Oil / chemistry*
Spectroscopy, Fourier Transform Infrared
Starch / chemistry*
Steam
Zea mays / chemistry*

Substances

Biocompatible Materials
Membranes, Artificial
Steam
Soybean Oil
Starch