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Synthesis of carbon black-loaded natural rubber/carboxymethyl cellulose semi-IPN nanocomposite for effluent treatment
Journal of Rubber Research ( IF 1.3 ) Pub Date : 2024-04-10 , DOI: 10.1007/s42464-024-00248-4
Manju R Nath , A. Mohanan

Semi-IPN composites of natural rubber (NR), hydrophilic sodium carboxymethyl cellulose (CMC) and carbon black (CB) with different compositions have been created by solution casting process in an attempt to develop a novel adsorbent under various pH ranges for the cationic dye methylene blue (MB). The produced NR/CMC film can be employed as an adsorbent of MB dye, according to the results, which demonstrate that composites with 2% CMC and 0.2 g CB displayed a maximum adsorption capacity of 1.72 mg/g and a dye removal efficiency of 85.22% at pH 9. The semi-IPNs were characterised using X-ray diffraction, Thermogravimetry, FTIR, and SEM methods. The NR/CMC semi-IPN composites' SEM micrographs showed a continuous, homogenous and porous structure. The films' equilibrium swelling characteristics were examined. For the NR98%CMC2% polymeric composition, containing 2% glutaraldehyde (GA) and 0.02 g CB loading, a maximum tensile strength of 3.3 MPa was achieved. In a 12-month period with 2% CMC, the NR/CMC semi-IPN showed a 70% biodegradation rate, while the pure NR showed only a 20% degradation rate. X-ray diffraction analysis shows that the addition of CMC reduces the crystallinity of natural rubber.



中文翻译:

炭黑负载天然橡胶/羧甲基纤维素半互穿网络纳米复合材料的合成用于污水处理

采用溶液流延工艺制备了不同成分的天然橡胶(NR)、亲水性羧甲基纤维素钠(CMC)和炭黑(CB)的半互穿网络复合材料,试图开发一种在不同pH范围下用于阳离子染料的新型吸附剂亚甲基蓝(MB)。结果表明,所制备的 NR/CMC 薄膜可用作 MB 染料的吸附剂,表明含有 2% CMC 和 0.2 g CB 的复合材料的最大吸附容量为 1.72 mg/g,染料去除效率为 85.22 pH 9 时的百分比。使用 X 射线衍射、热重分析、FTIR 和 SEM 方法对半互穿网络进行了表征。 NR/CMC半IPN复合材料的SEM显微照片显示出连续、均匀和多孔的结构。检查了薄膜的平衡溶胀特性。对于含有 2% 戊二醛 (GA) 和 0.02 g CB 负载的 NR98%CMC2% 聚合物组合物,获得了 3.3 MPa 的最大拉伸强度。在使用 2% CMC 的 12 个月期间,NR/CMC 半互穿网络显示出 70% 的生物降解率,而纯 NR 的生物降解率仅为 20%。 X射线衍射分析表明,CMC的添加降低了天然橡胶的结晶度。

更新日期:2024-04-11
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