Harnessing leather waste in polymer matrix for sustainable smart shape‐stable phase change materials

Harnessing leather waste in polymer matrix for sustainable smart shape‐stable phase change materials

The utilization of leather waste (LW) in a polyurethane (PU) matrix makes a smart and novel shape stable phase change material (SSPCM). This is essential for sustainability as it reduces landfill waste after use. The PU is synthesized in bulk with a 90% yield, using biodegradable polycaprolactone di...

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Bibliographic Details
Published in:Journal of applied polymer science Vol. 141; no. 29
Main Authors: Sarkar, Jit, Samanta, Debasis, Chaudhuri, Saikat, Angeline, J., Kumari, K. G. Akshaya, Jaisankar, Sellamuthu N.
Format: Journal Article
Language:English
Published: Hoboken, USA John Wiley & Sons, Inc 05-08-2024
Wiley Subscription Services, Inc
Subjects:
applications
biopolymers and sustainable polymers
Castor oil
Chemical bonds
Crosslinking
degradable
Diisocyanates
Footwear
Healing
Hydrogen bonding
Leather
Phase change materials
Polycaprolactone
polyurethane
Polyurethane resins
Recovery
Thermodynamic properties
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Summary:The utilization of leather waste (LW) in a polyurethane (PU) matrix makes a smart and novel shape stable phase change material (SSPCM). This is essential for sustainability as it reduces landfill waste after use. The PU is synthesized in bulk with a 90% yield, using biodegradable polycaprolactone diol and bio‐based polyol (castor oil), along with tolylene‐2,4‐diisocyanate. PL and PLG composites are prepared by blending of constituent components PU (P), LW (L), and poly(glycidyl methacrylate) (PGMA, G), as specified by their code names. Role of LW (hydrogen bonding and chemical crosslinking) and morphology are elucidated by FTIR and SEM, respectively. Self‐healing time (2 h), shape fixity ratios (Rf) (PL: 60–80% and PLG: 60–70%) and shape recovery ratios (Rr) (100% for both) are determined at 60°C. PLG displays faster shape recovery in water (<30 s) compared to air (>300 s). Shape stability and thermal properties of the SSPCM are examined using the temperature responsive leakage study, TGA, and DSC. This research introduces a new approach for using leather waste (LW) in SSPCM, with self‐healing and 100% Rr. This material may find application where SSPCM with high durability and flexibility is essential such as textile and footwear materials. Leather waste was used in a mixture of degradable polyurethane and biocompatible poly(glycidyl methacrylate) to create a shape‐stable phase change material (SSPCM). This material has smart properties like self‐healing and shape recovery. It can function effectively across a broad temperature range (−50 to 200°C) without experiencing cold‐cracking or degradation.
ISSN:0021-8995
1097-4628
DOI:10.1002/app.55659