Green TPUs from Prepolymer Mixtures Designed by Controlling the Chemical Structure of Flexible Segments - Publication - Bridge of Knowledge

Your account

login

Search

Green TPUs from Prepolymer Mixtures Designed by Controlling the Chemical Structure of Flexible Segments

Abstract

This study concerns green thermoplastic polyurethanes (TPU) obtained by controlling the chemical structure of flexible segments. Two types of bio-based polyether polyols—poly(trimethylene glycol)s—with average molecular weights ca. 1000 and 2700 Da were used (PO3G1000 and PO3G2700, respectively). TPUs were prepared via a two-step method. Hard segments consisted of 4,4?- diphenylmethane diisocyanates and the bio-based 1,4-butanodiol (used as a chain extender and used to control the [NCO]/[OH] molar ratio). The impacts of the structure of flexible segments, the amount of each type of prepolymer, and the [NCO]/[OH] molar ratio on the chemical structure and selected properties of the TPUs were verified. By regulating the number of flexible segments of a given type, different selected properties of TPU materials were obtained. Thermal analysis confirmed the high thermal stability of the prepared materials and revealed that TPUs based on a higher amount of prepolymer synthesized from PO3G2700 have a tendency for cold crystallization. An increase in the amount of PO3G1000 at the flexible segments caused an increase in the tensile strength and decrease in the elongation at break. Melt flow index results demonstrated that the increase in the amount of prepolymer based on PO3G1000 resulted in TPUs favorable in terms of machining.

Citations

  • 1 3

    CrossRef

  • 0

    Web of Science

  • 1 4

    Scopus

Authors (5)

Cite as

Full text

download paper
downloaded 112 times
Publication version
Accepted or Published Version
License
Creative Commons: CC-BY open in new tab

Keywords

Details

Category:
Articles
Type:
artykuły w czasopismach
Published in:
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES no. 22,
ISSN: 1661-6596
Language:
English
Publication year:
2021
Bibliographic description:
Kasprzyk P., Głowińska E., Parcheta-Szwindowska P., Rohde K., Datta J.: Green TPUs from Prepolymer Mixtures Designed by Controlling the Chemical Structure of Flexible Segments// INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES -Vol. 22,iss. 14 (2021), s.7438-
DOI:
Digital Object Identifier (open in new tab) 10.3390/ijms22147438
Verified by:
Gdańsk University of Technology

seen 263 times

Recommended for you

The Green Approach to the Synthesis of Bio-Based Thermoplastic Polyurethane Elastomers with Partially Bio-Based Hard Blocks

2021

Structure versus hydrolytic and thermal stability of bio-based thermoplastic polyurethane elastomers composed of hard and soft building blocks with high content of green carbon

2024

Effect of bio-based components on the chemical structure, thermal stability and mechanical properties of green thermoplastic polyurethane elastomers

2020

Thermoplastic polyurethanes derived from petrochemical or renewable resources: A comprehensive review

2017
Meta Tags