Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Faculty Publications Article Faculty Publications -Articles Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Creator An entity primarily responsible for making the resource Brahma, Bidhu Bhushan; Kalita, Pranjal; Baruah, Manasi Buzar Title A name given to the resource Physical Analysis of White and Brick Red Eri Silk Fiber Date A point or period of time associated with an event in the lifecycle of the resource 01-01-2025 Source A related resource from which the described resource is derived Fibers and Polymers;Volume;26;Issue;6;Article No.;108077;pp.2327-2340 Identifier An unambiguous reference to the resource within a given context <a href="https://doi.org/10.1007/s12221-025-00958-5" target="_blank" rel="noreferrer noopener">https://doi.org/10.1007/s12221-025-00958-5</a> <br /><br /><a href="https://www.scopus.com/pages/publications/105004351135?origin=resultslist" target="_blank" rel="noreferrer noopener">https://www.scopus.com/pages/publications/105004351135?origin=resultslist</a> Coverage The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant Brahma B.B., Department of Physics, Central Institute of Technology Kokrajhar, Deemed to be University, Ministry of Education, Assam, India; Kalita P., Department of Chemistry, Central Institute of Technology Kokrajhar, Deemed to be University, Ministry of Education, Assam, India; Baruah M.B., Department of Physics, Central Institute of Technology Kokrajhar, Deemed to be University, Ministry of Education, Assam, India Description An account of the resource Despite growing interest in Eri silk, limited research compares the properties of white and brick red varieties, particularly their optical, mechanical, and crystallinity behaviour. This study investigates the structural, optical, thermal, and surface properties of both varieties using X-ray diffraction (XRD), UVvis analysis (UVvis), thermogravimetric analysis (TGA), and scanning electron microscopy (SEM). The Eri silk fibers were evaluated for weight loss percentage, functional groups, thermal stability, tensile strength, and amino acid composition. Both experienced around 10% weight loss after degumming. UVvis analysis revealed an increase in optical band gap and decrease in Urbach energy after degumming, indicating improved structural order. XRD analysis showed crystallinity of 55% for degummed white and 50% for brick red Eri silk fiber. TGA demonstrated that undegummed white Eri silk exhibited 10% less mass loss than brick red, indicating higher thermal stability. SEM analysis showed white fibers with an average diameter of 19.34m, compared to 16.32m for brick red. White Eri silk fiber also demonstrated superior stretchability and flexibility in tensile strength tests. Amino acid profiling indicated a higher alanine content in white fiber. These findings enhance the understanding of physical properties of Eri silks varieties for potential applications in textiles and biomaterials. The Author(s), under exclusive licence to the Korean Fiber Society 2025. Subject The topic of the resource Brick red Eri silk; Crystallinity; Degumming; Fibroin; Thermal stability; White Eri silk; ?-sheets Publisher An entity responsible for making the resource available Korean Fiber Society Relation A related resource ISSN: 12299197; Language A language of the resource English Type The nature or genre of the resource Article Rights Information about rights held in and over the resource Restricted Access; Hardcopy may be available in the library Format The file format, physical medium, or dimensions of the resource online