碘值与植物油质量分数的线性关系:克服可再生聚合物生产季节性挑战的新方法

IF 2.6 4区 化学 Q3 POLYMER SCIENCE
Fernanda Barreto dos Santos, Caroline Gaglieri, Gabriel Iago dos Santos, Rafael Turra Alarcon, Gilbert Bannach
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引用次数: 0

摘要

如今,从不可再生资源中提取聚合物的现象十分普遍。因此,对植物油等环境可持续替代品的需求不断增加。然而,植物油在聚合物生产中的大规模使用受到季节性和地区供应的阻碍。为了应对这些挑战,本研究证明了制造具有精确碘值(IV)的植物油混合物的可行性,碘值是聚合反应的关键参数。这些混合物的碘值(通过滴定和 1H-NMR 方法测定)与质量分数之间呈线性关系。通过组合不同 IV 值的植物油,混合物可以达到所需的不饱和水平,为聚合物行业提供持续的原料供应。因此,为了验证这种方法,我们使用巴西坚果植物油和亚麻籽植物油的混合物合成了一种聚合物,其 IV 值等于每 100 克样品中含 123.5 克 I2。这种聚合物的热稳定性(265 °C)和玻璃化转变温度(-14.7 °C)与纯葡萄籽油制成的聚合物(IV 值为每 100 克样品含 123.0 克 I2)具有可比性。因此,这种方法能够生产出与使用单一植物油所获得的特性相似的聚合物,从而扩大了可持续聚合物制造的潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Linear dependence of iodine value on the mass fraction of vegetable oils: a new way to overcome seasonal challenges for renewable polymer manufacturing

Polymers derived from non-renewable sources are prevalent today. The demand for environmentally sustainable alternatives, such as vegetable oils, is consequently increasing. However, the large-scale utilization of vegetable oil in the polymers production is hindered by seasonality and regional availability. To address these challenges, this study demonstrates the feasibility of creating vegetable oil blends with precise iodine values (IVs), a critical parameter for polymerization. These blends exhibit a linear relationship between IV (determined by both titration and 1H-NMR methods) and mass fraction. By combining vegetable oils with varying IVs, blends can be used to achieve the desired unsaturation level providing a continuous supply of raw materials for the polymer industry. Thus, to validate this approach, a polymer was synthesized using a blend of Brazil nut and linseed vegetable oils, resulting in an IV equal to 123.5 g of I2 per 100 g of sample. This polymer exhibited comparable properties, including thermal stability (265 °C) and glass transition temperature (-14.7 °C), to a polymer made from pure grape seed oil with an IV of 123.0 g of I2 per 100 g. These findings confirm that the desired IV can be achieved through simple blending based on a linear relationship between IV and mass fraction. Therefore, this approach enables the production of polymers with properties similar to those obtained using a single vegetable oil, thereby expanding the potential for sustainable polymer manufacturing.

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来源期刊
Journal of Polymer Research
Journal of Polymer Research 化学-高分子科学
CiteScore
4.70
自引率
7.10%
发文量
472
审稿时长
3.6 months
期刊介绍: Journal of Polymer Research provides a forum for the prompt publication of articles concerning the fundamental and applied research of polymers. Its great feature lies in the diversity of content which it encompasses, drawing together results from all aspects of polymer science and technology. As polymer research is rapidly growing around the globe, the aim of this journal is to establish itself as a significant information tool not only for the international polymer researchers in academia but also for those working in industry. The scope of the journal covers a wide range of the highly interdisciplinary field of polymer science and technology, including: polymer synthesis; polymer reactions; polymerization kinetics; polymer physics; morphology; structure-property relationships; polymer analysis and characterization; physical and mechanical properties; electrical and optical properties; polymer processing and rheology; application of polymers; supramolecular science of polymers; polymer composites.
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