Investigation of Time-Dependent Behavior of Starch-Based, Injection Molded Biodegradable Polymer

Tamás Tábi; Ferenc Tuba; László Oláh

doi:10.4028/www.scientific.net/MSF.589.281

Paper Titles

Atomic Force Microscopy Studies of Alkyl-Phosphonate SAMs on Mica
p.257

The Examination of Weld Line Properties in Injection Molded PP Composites
p.263

Preparation of MWCNT/Carbon Fabric Reinforced Hybrid Nanocomposite and Examination of its Mechanical Properties
p.269

A New Technique for Characterization of Residual Stresses in Glass Surfaces: Scratch Test Completed with Image Analysis
p.275

Investigation of Time-Dependent Behavior of Starch-Based, Injection Molded Biodegradable Polymer
p.281

Evaluation of Microgravity Heat Conductivity Measurements with FLUENT System
p.287

Equations and Verification of New Diffusion Parameters
p.293

Transformation of Temperature and Time Diagrams Constructed by Different Time Intervals Applying the Newton Formula
p.299

The Effect of a Rotating Magnetic Field on the Solidification of A356 Alloy Modified by Strontium
p.305

HomeMaterials Science ForumMaterials Science Forum Vol. 589Investigation of Time-Dependent Behavior of...

Investigation of Time-Dependent Behavior of Starch-Based, Injection Molded Biodegradable Polymer

Abstract:

Nowadays as a result of the increasing environmental friendly consciousness and the decreasing oil reserves, natural origin based materials are developed. These materials are not only based on renewable, natural resources, but capable of biodegradation in compost. These biodegradable polymers (biopolymers) can be inserted into the nature’s recycling process. One of the most important biopolymers is starch. Starch can be processed like a thermoplastic material by adding plasticizers, creating the so called thermoplastic starch. However the price of starch is rather low, it has certain drawbacks retarding its wide industrial usage. It is sensitive to moisture, disrupts in pure water, has low mechanical properties, and in time it ages. This ageing or time-dependent behavior was analyzed with injection molded tensile specimens. The shrinkage and mechanical properties of the specimens were determined as a function of ageing time. The fracture surface was analyzed by scanning electron microscope. The results of the measurements were compared with previous examinations.