Biodegradable Polyurethane Pressure-Sensitive Adhesives Using Biobased Polyols with Distinct Intrinsic Properties
Source abstract
Abstract
Polyurethane pressure-sensitive adhesives (PSAs) were synthesized by reacting isophorone diisocyanate (IPDI) with mixtures of different biobased polyols, where polylactide diol (PLA 1000) acted as a hard polyol and cashew nut shell liquid (CNSL)-derived diol and castor oil (CO) acted as soft segments. Besides, CO played another role in the synthesis of the polyurethanes as a cross-linker to enhance the cohesion of the prepared PSAs. The effects of different ratios of polyols and NCO/OH on microphase separation, thermal, rheological, and adhesive properties of the polyurethane were comprehensively studied. A balanced PSA with excellent tack and sufficient peel strength was prepared by adjusting the ratio of different polyols at PLA1000/CNSL diol/CO = 4:4:2 and a suitable NCO/OH value of 0.70. Eventually, the biodegradability of PSA 442-0.70 was investigated, and the biodegradation rate reached 64.47% within 8 weeks, making it a promising environmentally friendly adhesive tape for packaging applications.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Polymer composites and self-healing · biodegradable polymer synthesis and properties · Advanced Polymer Synthesis and Characterization
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Ningbo Key Laboratory of Polymer Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo 315201, China
Funding
Science and Technology Innovation 2025 Major Project of Ningbo
References (49)
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