FigsharePub Date : 2025-05-13DOI: 10.1021/acsagscitech.5c00092.s001
Tarun Kumar Gayen (21352971), Mohammad Amdad Ali (21352974), Sudhir G. Warkar (21352977)
{"title":"Cellulose Microfibers-EmbeddedCarboxymethyl TamarindKernel Gum Hydrogels as Soil Conditioners and Plant Nutrients Carriers","authors":"Tarun\u0000Kumar Gayen (21352971), Mohammad Amdad Ali (21352974), Sudhir G. Warkar (21352977)","doi":"10.1021/acsagscitech.5c00092.s001","DOIUrl":"https://doi.org/10.1021/acsagscitech.5c00092.s001","url":null,"abstract":"Synthesis of rice straw cellulose (RSC) microfibers-embedded carboxymethyl tamarind kernel gum (CMTKG) hydrogels was demonstrated, in which the cellulose microfibers serve as a flexible skeleton, contributing to the overall strength and resilience of the hydrogels, while the CMTKG (with a degree of substitution of 0.2) provides carboxyl groups that help retain water molecules within the hydrogel matrix. Freeze–thaw technique was utilized for the gelation process using epichlorohydrin (ECH) as a cross-linker. The synthesized hydrogel [Formulation: 0.1 g of RSC, 0.3 g of CMTKG and 1 mL of ECH] achieved the highest equilibrium swelling ratio of ∼7722% at ∼18 °C in distilled water. Crucially, this hydrogel was upcycled from agricultural waste (rice straw and tamarind seeds). Thus, it is biofriendly and suitable for agricultural applications. The hydrogel-incorporated soil showed a 33% higher maximum water-holding capacity (MWHC) and a 23% higher bulk density (BD), compared with the control. When manganese (Mn) was loaded into the hydrogels, it demonstrated ∼80% Mn release after 184 h in distilled water. Release kinetics showed that the Peppas–Sahlin model was the best-fit model, indicating the release of Mn from the CMTKG-RSC hydrogel matrix with polymer relaxation and Fickian diffusion. The Mn-loaded hydrogel exhibited ∼80% Mn release in soil after 9 days, and release kinetics indicated that the Peppas–Sahlin model was the best-fit model. Furthermore, the Mn-loaded hydrogel significantly enhanced the growth of blackberry plants in pot trials compared to the control group.","PeriodicalId":522772,"journal":{"name":"Figshare","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147903271","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}