Abstract

The present work deals with the miscibility study of poly (ethylene oxide) (PEO)/Sodium salt of carboxymethyl cellulose (Na-CMC) blend in aqueous medium using various methods like viscosity (η), refractive index (n), ultrasonic velocity (v) and density (ρ) at room temperature. Using viscosity data, Chee’s differential interaction parameters ‘ΔB’, ‘µ’ and Sun’s interaction parameter ‘α’ were computed. This study revealed that PEO/Na-CMC blend is found to be miscible when PEO content is greater than 50 wt%. In addition, the same was also studied by measuring the adiabatic compression (β_ad), acoustic impedance (z) and intermolecular free length (L_f) at room temperature. Further, the blend was used to prepare polymer blend films by solution cast technique. The blend films were then characterized using Fourier Transform Infrared Spectroscopy (FTIR), Differential Scanning Calorimetry (DSC) and Scanning Electron Microscopy (SEM) for their structural, thermal and morphological/microstructural studies respectively. The results of these studies were found to be in good agreement with the one obtained from the viscosity method.

摘要

目前的工作涉及使用各种方法，如粘度 (η)、折射率 (n)、超声波速度 ( v) 和室温下的密度 (ρ)。使用粘度数据，计算了 Chee 的微分相互作用参数“ΔB”、“μ”和 Sun 的相互作用参数“α”。该研究表明，当 PEO 含量大于 50 wt% 时，发现 PEO/Na-CMC 混合物是可混溶的。此外，还通过测量绝热压缩 (β _ad )、声阻抗 (z) 和分子间自由长度 (L _f） 在室温下。此外，该共混物用于通过溶液流延技术制备聚合物共混物薄膜。然后使用傅里叶变换红外光谱 (FTIR)、差示扫描量热法 (DSC) 和扫描电子显微镜 (SEM) 分别对共混薄膜进行结构、热和形态/微观结构研究。发现这些研究的结果与从粘度法获得的结果非常一致。