Preparation and characterization of maltodextrin-based polyurethane

Dan Dan Wu; Ying Tan; Zeng Wen Cao; Li Jing Han; Hui Liang Zhang; Li Song Dong

doi:10.1016/j.carbpol.2018.04.034

Preparation and characterization of maltodextrin-based polyurethane

Carbohydr Polym. 2018 Aug 15:194:236-244. doi: 10.1016/j.carbpol.2018.04.034. Epub 2018 Apr 14.

Authors

Dan Dan Wu¹, Ying Tan², Zeng Wen Cao¹, Li Jing Han², Hui Liang Zhang², Li Song Dong³

Affiliations

¹ Key Laboratory of Polymer Ecomaterials, Chinese Academy of Sciences, Changchun Institute of Applied Chemistry, Changchun, 130022, China; Graduate School of the Chinese Academy of Sciences, Beijing, 10080, China.
² Key Laboratory of Polymer Ecomaterials, Chinese Academy of Sciences, Changchun Institute of Applied Chemistry, Changchun, 130022, China.
³ Key Laboratory of Polymer Ecomaterials, Chinese Academy of Sciences, Changchun Institute of Applied Chemistry, Changchun, 130022, China. Electronic address: dongls@ciac.ac.cn.

PMID: 29801834
DOI: 10.1016/j.carbpol.2018.04.034

Abstract

Maltodextrin (MD) based polyurethane (MDPU) was prepared by the reaction of MD and polyethyleneglicol (PEG) polyurethane prepolymer (PUP). The structure and properties of the MDPU were investigated by Fourier transform infrared spectroscopy (FTIR), nuclear magnetic resonance spectroscopy (¹H NMR), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), scanning electron microscope (SEM), Energy dispersive X-ray spectrometry (EDS), and tensile-testing machine in detail. Chemical structure of MDPU was confirmed by FTIR and ¹H NMR. MDPU with 66.7% of PUP (MDPU-0.5) was a thermoset plastic with good elasticity but the others (MDPU-1, MDPU-2, and MDPU-3) were thermoplastics. TGA analysis showed that the MDPUs exhibited three stages of the thermal degradation, mainly including urethane linkage (I, 197-268 °C), MD and PUP components (II, 268-380 °C) and the formed stable structures during thermal degradation (III, 400-505 °C), respectively. The various degrees of miscibility were presented. The mechanical properties of thermoplastic MDPUs exhibited relatively high elongation at break under the given relative humidity.

Keywords: Maltodextrin-based polyurethane; Phase structure; Thermal stability.