Beijing Key Laboratory for Theory and Technology of Advanced Battery Materials, School of Materials Science and Engineering, Peking University, Beijing 100871, PR China; Department of Chemistry, Government College University Faisalabad, Faisalabad 38000, Pakistan.
Department of Applied Sciences, National Textile University, Faisalabad 37610, Pakistan.
Int J Biol Macromol. 2024 Oct;278(Pt 2):134657. doi: 10.1016/j.ijbiomac.2024.134657. Epub 2024 Aug 13.
This research addresses the need for enhanced biomaterials by investigating the influence of the NCO/OH ratio on sodium alginate-based polyurethane elastomers(Al-PUEs), offering novel insights into their structural, thermal, mechanical and swelling behavior. Al-PUEs were prepared by blending the chain extenders with key ingredients in a specific molar ratio using aliphatic HMDI and HTPB monomers. The chemical linkages, crystalline behavior, homogeneity, and surface morphology of PUEs were evaluated by FT-IR, XRD, SEM, and EDX analysis. Thermo-mechanical studies were performed using TGA, DSC and tensile testing. Swelling behavior and absorption analysis were analyzed in DMSO and water. The analysis indicated that the hydrophilicity and swelling behavior of the prepared PUEs were affected by the addition of sodium alginate content. The results exhibit the tailor-made network structure of Al-PUEs, resulting in better thermal stability, elasticity of materials via stress-strain behavior and marvelous characteristic features than traditional high-tech yields. Furthermore, the resulting Al-PUEs are potential candidates for biomedical implants.
本研究通过研究 NCO/OH 比对基于海藻酸钠的聚氨酯弹性体（Al-PUE）的影响，满足了对增强型生物材料的需求，为其结构、热学、力学和溶胀行为提供了新的见解。Al-PUE 是通过在特定摩尔比下，使用脂肪族 HMDI 和 HTPB 单体，将扩链剂与关键成分混合制备而成。通过 FT-IR、XRD、SEM 和 EDX 分析评估了 PUE 的化学交联、结晶行为、均一性和表面形态。通过 TGA、DSC 和拉伸试验进行了热机械研究。在 DMSO 和水中进行了溶胀行为和吸收分析。分析表明，通过添加海藻酸钠含量，制备的 PUE 的亲水性和溶胀行为受到影响。结果表明，通过应力-应变行为，Al-PUE 的定制网络结构使材料具有更好的热稳定性和弹性，具有优于传统高科技产量的出色特性。此外，所得到的 Al-PUE 是生物医学植入物的潜在候选物。
