Surface Response Methodology-Based Mixture Design to Study the Influence of Polyol Blend Composition on Polyurethanes' Properties
Surface Response Methodology-Based Mixture Design to Study the Influence of Polyol Blend Composition on Polyurethanes' Properties
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DOI：
10.3390/molecules23081942
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发表时间：
2018-08-01
期刊：
影响因子：
4.6
通讯作者：
Valero, Manuel F.
中科院分区：
文献类型：
--
作者：
Arevalo-Alquichire, Said;Morales-Gonzalez, Maria;Valero, Manuel F.
聚丙烯是具有强结构-性能关系的材料。本研究的目的是研究聚氨酯多元醇共混物组成对其性能的影响，采用混料设计并为每个性能建立数学模型。研究了其吸水率、水解降解率、接触角、拉伸强度、硬度和模量.此外，通过热重分析研究了热稳定性。曲线下面积用于评价多元醇共混物组合物对热稳定性以及吸水和水解降解动力学的影响。采用最小二乘法计算回归系数。属性的模型是显著的，并且不拟合（p < 0.05）。拟合统计表明拟合和预测都很好。吸水性，水解降解和接触角介导的多元醇的亲水性。拉伸强度、模量和硬度可以通过PE含量和多元醇的特性来调节。热分析曲线的回归表明，随着PCL和PE含量的增加，热稳定性提高。模型项的方差分析表明，三个组件的整体性能，如吸水率，水解降解，硬度，拉伸强度和模量的影响。PEG*PCL相互作用影响接触角，这是一种表面性质。混合料设计应用允许通过数学模型理解结构-性能关系。
Polyurethanes are materials with a strong structure-property relationship. The goal of this research was to study the effect of a polyol blend composition of polyurethanes on its properties using a mixture design and setting mathematic models for each property. Water absorption, hydrolytic degradation, contact angle, tensile strength hardness and modulus were studied. Additionally, thermal stability was studied by thermogravimetric analysis. Area under the curve was used to evaluate the effect of polyol blend composition on thermal stability and kinetics of water absorption and hydrolytic degradation. Least squares were used to calculate the regression coefficients. Models for the properties were significant, and lack of fit was not (p < 0.05). Fit statistics suggest both good fitting and prediction. Water absorption, hydrolytic degradation and contact angle were mediated by the hydrophilic nature of the polyols. Tensile strength, modulus and hardness could be regulated by the PE content and the characteristics of polyols. Regression of DTG curves from thermal analysis showed improvement of thermal stability with the increase of PCL and PE. An ANOVA test of the model terms demonstrated that three component influences on bulk properties like water absorption, hydrolytic degradation, hardness, tensile strength and modulus. The PEG*PCL interaction influences on the contact angle, which is a surface property. Mixture design application allowed for an understanding of the structure-property relationship through mathematic models.