fulltext.study @t Gmail

Uncatalyzed synthesis, thermal and mechanical properties of polyurethanes based on poly(εε-caprolactone) and 1,4-butane diisocyanate with uniform hard segment

Paper ID Volume ID Publish Year Pages File Format Full-Text
11193 724 2005 10 PDF Available
Title
Uncatalyzed synthesis, thermal and mechanical properties of polyurethanes based on poly(εε-caprolactone) and 1,4-butane diisocyanate with uniform hard segment
Abstract

Polyurethanes based on poly(εε-caprolactone) (PCL) (750–2800 g/mol) and 1,4-butane diisocyanate (BDI) with different soft segment lengths and constant uniform hard segment length were synthesized in absence of catalysts for the production of a degradable meniscus scaffold. First the polyesterdiols were endcapped with BDI yielding a macrodiisocyanate with a minimal amount of side reactions and a functionality of 2.0. Subsequently, the macrodiisocyanates were extended with 1,4-butanediol in order to obtain the corresponding polyurethane. The polyurethanes had molecular weights between 78 and 160 kg/mol.Above molar masses of 1900 g/mol of the polyesterdiol crystalline PCL was found while the hard segment showed an increase in melting point from 78 to 122 °C with increasing hard segment content. It was estimated that the percentage crystallinity of the hard segment varied between 92 and 26%. The Young's modulus varied between 30 and 264 MPa, the strain at break varied between 870 and 1200% and tear strengths varied between 97 and 237 kJ/m2.

Keywords
Polyurethane; Degradation; Polycaprolactone; Elastomer; Scaffold
First Page Preview
Uncatalyzed synthesis, thermal and mechanical properties of polyurethanes based on poly(εε-caprolactone) and 1,4-butane diisocyanate with uniform hard segment
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us
Publisher
Database: Elsevier - ScienceDirect
Journal: Biomaterials - Volume 26, Issue 20, July 2005, Pages 4219–4228
Authors
, , , , , , , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us