Biodegradable Thermoplastic Polyurethane Pressure Sensitive Adhesives Synthesized From Polyester/Polyether Polyol DOI Open Access
Yaqi Cao, Xinyan Wang,

Liwen Sun

et al.

Journal of Applied Polymer Science, Journal Year: 2025, Volume and Issue: unknown

Published: March 26, 2025

ABSTRACT Renewable and degradable pressure‐sensitive adhesives (PSAs) have emerged as promising green alternatives in the adhesive industry, addressing both petroleum resource depletion plastic pollution challenges. This work is to provide a design preparation of high‐performance biodegradable bio‐based thermoplastic polyurethane adhesive(TPU‐PSAs) solve problem that most PSAs are nondegradable, nonrenewable, nonrecyclable. Through solvent‐free one‐step polymerization process, we synthesized TPU‐PSAs using polylactide diol (PLA), polycaprolactone (PCL), polytetramethylene ether glycol (PTMEG) polyols with varying NCO/OH ratios. correlation analysis microphase separation morphology, viscoelastic response, macroscopic adhesion behavior, structure‐performance relationship system was established, which promoted rational sustainable adhesives. Notably, HS (30)/0.8 (NCO/OH = 0.8) demonstrated exceptional peel strength (7.5 N/cm) coupled substantial biodegradability (56.4% degradation within 8 weeks). Meanwhile, (30)/1 1) exhibited superior shear resistance (368 kPa on glass substrates) without requiring cross‐linking agents. These showcase unique combination tunable properties through controlled separation, positioning them candidates for applications demand biodegradability, recyclability, renewability.

Language: Английский

Biodegradable Thermoplastic Polyurethane Pressure Sensitive Adhesives Synthesized From Polyester/Polyether Polyol DOI Open Access
Yaqi Cao, Xinyan Wang,

Liwen Sun

et al.

Journal of Applied Polymer Science, Journal Year: 2025, Volume and Issue: unknown

Published: March 26, 2025

ABSTRACT Renewable and degradable pressure‐sensitive adhesives (PSAs) have emerged as promising green alternatives in the adhesive industry, addressing both petroleum resource depletion plastic pollution challenges. This work is to provide a design preparation of high‐performance biodegradable bio‐based thermoplastic polyurethane adhesive(TPU‐PSAs) solve problem that most PSAs are nondegradable, nonrenewable, nonrecyclable. Through solvent‐free one‐step polymerization process, we synthesized TPU‐PSAs using polylactide diol (PLA), polycaprolactone (PCL), polytetramethylene ether glycol (PTMEG) polyols with varying NCO/OH ratios. correlation analysis microphase separation morphology, viscoelastic response, macroscopic adhesion behavior, structure‐performance relationship system was established, which promoted rational sustainable adhesives. Notably, HS (30)/0.8 (NCO/OH = 0.8) demonstrated exceptional peel strength (7.5 N/cm) coupled substantial biodegradability (56.4% degradation within 8 weeks). Meanwhile, (30)/1 1) exhibited superior shear resistance (368 kPa on glass substrates) without requiring cross‐linking agents. These showcase unique combination tunable properties through controlled separation, positioning them candidates for applications demand biodegradability, recyclability, renewability.

Language: Английский

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