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首页> 外文期刊>Biomacromolecules >Solution Properties of Conventional Gum Arabic and a Matured Gum Arabic (Acacia (sen) SUPER GUM)
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Solution Properties of Conventional Gum Arabic and a Matured Gum Arabic (Acacia (sen) SUPER GUM)

机译：常规阿拉伯胶和成熟阿拉伯胶（Acacia（sen）SUPER GUM）的溶液性质

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摘要

Dilute solution properties of two specially matured gum arabic samples (EMI and EM2) were compared to the conventional gum (EMO) using static light scattering.The apparent molar mass (M_(w,app)) and radius of gyration (R_(g,app)) for the three samples showed unusual concentration dependence.These data were satisfactorily interpreted by a simple association model that takes into account the repulsive interaction among clusters,which allowed us to obtain the true molar mass (M_w(0)) and radius of gyration (R_g(0)).A common power law relation was observed between M_w(0) and R_g(0),giving a somewhat higher exponent than expected for linear and branched polymers in a good solvent.M_w(0) and R_g(0) obtained for the three gums do not differ significantly from each other.However,the data showed clearly a constant increase of the association from EMO to EM2 with increasing concentration.This is in accordance with the previously observed improved functional properties for the matured products.
机译：使用静态光散射将两种特别成熟的阿拉伯树胶样品（EMI和EM2）的稀释溶液特性与常规树胶（EMO）进行比较，表观摩尔质量（M_（w，app））和回转半径（R_（g， app））的三个样品表现出不同寻常的浓度依赖性。这些数据已通过简单的关联模型令人满意地解释，该模型考虑了团簇之间的排斥相互作用，这使我们可以获得真实的摩尔质量（M_w（0））和半径旋转（R_g（0））。在M_w（0）和R_g（0）之间观察到常见的幂律关系，比在良好溶剂中线性和支化聚合物的预期指数高一些.M_w（0）和R_g（ 0）三种口香糖获得的值没有显着差异。但是，数据清楚地表明，随着浓度的增加，从EMO到EM2的缔合不断增加。这与先前观察到的成熟产品功能特性的提高一致。

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