Title:
Transforming Polysaccharide Biomass into Thermoplastic Materials for Value-Added Applications
Author(s):
Wang, J.H., Shi, B.
Document(s):
Paper
Abstract:
This paper describes the research on converting a low-cost polysaccharide biomass into thermoplastic materials intended for high-value, water-dispersible thin film applications. Thermoplastic starch made from native starch is water sensitive but not water dispersible. This research focused on the converting modified starches such as starch esters, pregelatinized Tapioca dextrin, and hydroxyalkylated starch into thermoplastic bioplastics. The rheology of TPMS was found to depend on the type of modified starch, the type of plasticizers, and the amount of plasticizers present in TPMS. The resulting thermoplastic modified starch (TPMS) was made into binary polymer blends having a majority of TPMS with biodegradable polymers. The binary polymer blends were found to have good film forming properties and good water dispersibility, however, their mechanical properties were poor, in terms of high modulus, low and unbalanced peak stress, low and unbalanced ductility, etc. SEM of the binary blend films showed a laminar, layered microstructure. To overcome the property deficiency, a series of tertiary polymer blends comprising a majority of TPMS, a synthetic water-soluble polymer, and a biodegradable aliphatic-aromatic copolyester were found to have balanced mechanical properties, film processibility, water dispersibility, and sustainable polysaccharide biomass content.
Keywords:
bioplastic, biopolymers, conversion technology, sustainability, upgrading
Topic:
Biomass Chemistry
Subtopic:
Next-to-market applications
Event:
18th European Biomass Conference and Exhibition
Session:
OB10.2
Pages:
1472 - 1474
ISBN-13:
978-88-89407-56-1
ISBN-10:
88-89407-56-5
Paper DOI:
10.5071/18thEUBCE2010-OB10.2
Price:
FREE
