Home / Advanced Search

  • Title/Keywords

  • Author/Affliations

  • Journal

  • Article Type

  • Start Year

  • End Year

Update SearchingClear
  • Articles
  • Online
Search Results (16)
  • Open Access

    ARTICLE

    Cross-Linking of Sago Starch with Furan and Bismaleimide via the Diels-Alder Reaction

    Henky Muljana*, Ivana Hasjem, Merianawati Sinatra, Dicky Joshua Pesireron, Michael Wilbert Puradisastra, Ryan Hartono, Kevin Yovan Hermanto, Tony Handoko

    Journal of Renewable Materials, Vol.11, No.12, pp. 4039-4060, 2023, DOI:10.32604/jrm.2023.031261

    Abstract This research paper describes the synthesis of thermo-reversible cross-linking of sago starch by grafting a furan pendant group (methyl 2-furoate) onto the starch backbone, followed by a Diels-Alder (DA) reaction of the furan functional group with 1,1′-(methylenedi-4,1-phenylene) bismaleimide (BM). The proof of principles was provided by FTIR and 1H-NMR analyses. The relevant FTIR peaks are the carbonyl peak (υ C=O sym) at 1721 cm−1 ; the two peaks appeared after DA cross-linking, i.e., at 1510 cm−1 (corresponding to υ CH=CH BM aromatic rings, stretching vibrations), and at 1173 cm−1 (assigned to cycloadduct (C-O-C, δ DA ring)) while the 1H-NMR result… More > Graphic Abstract

    Cross-Linking of Sago Starch with Furan and Bismaleimide via the Diels-Alder Reaction

  • Open Access

    ARTICLE

    Extraction and Characterization of Litopenaeus vannamei’s Shell as Potential Sources of Chitosan Biopolymers

    Che Engku Noramalina Che Engku Chik1, Amyra Suryatie Kamaruzzan1, Ahmad Ideris Abdul Rahim1, Fathurrahman Lananan2,3, Azizah Endut4, Siti Aslamyah5, Nor Azman Kasan1,*

    Journal of Renewable Materials, Vol.11, No.3, pp. 1181-1197, 2023, DOI:10.32604/jrm.2023.022755

    Abstract Chitin is the second most abundant polysaccharide, produced mainly as an industrial waste stream during crustacean processing. Chitin can be derived into chitosan through the deacetylation process. Conversion of shrimp waste into chitosan via the deacetylation process could be considered a practical approach for shell waste remediation. In this study, chitosan’s physicochemical characteristics extracted from two types of Pacific white leg shrimp, L. vannamei’s shell (i.e., rough and smooth), were compared with commercial chitosan. The yield, moisture, ash, solubility, water and fat binding capacity were measured. The degree of deacetylation (DDA) was calculated using FTIR, and their chemical Structure was… More > Graphic Abstract

    Extraction and Characterization of <i>Litopenaeus vannamei</i>’s Shell as Potential Sources of Chitosan Biopolymers

  • Open Access

    ARTICLE

    The Future of Bacterial Cellulose and Other Microbial Polysaccharides

    Eliane Trovatti*

    Journal of Renewable Materials, Vol.1, No.1, pp. 28-41, 2013, DOI:10.7569/JRM.2012.634104

    Abstract Biobased polymers have been gaining the attention of society and industry because of concerns about the depletion of fossil fuels and growing environmental problems. Cellulose fi bers are one of the most promising biopolymers to be explored as a component of composite materials with emergent properties for new applications. Bacterial Cellulose (BC), a special kind of cellulose produced by microorganisms, is endowed with unique properties. In this context, this perspective offers an overview about the properties of BC that would enable it to become a commodity. This includes an appraisal of the current BC market, as compared with other available… More >

  • Open Access

    ARTICLE

    Development and Characterisation of Phenolic Foams with Phenol-Formaldehyde-Chestnut Tannins Resin

    M.C. Lagel1, A. Pizzi1,2, S. Giovando3, A. Celzard4

    Journal of Renewable Materials, Vol.2, No.3, pp. 220-229, 2014, DOI:10.7569/JRM.2014.634113

    Abstract With the depletion of fossil resources, tannin extracts can be a natural alternative to some synthetic products. Hydrolysable chestnut tannin extracts have been used to partially replace phenol in PF resins for phenolic rigid foams. Phenol-formaldehyde-chestnut tannin (PFT) phenolic foams were initially made from copolymerized PFT resins of different molar ratio. The PFT foams so prepared were tested for thermal conductivity, these being slightly worse than that of pure PF foams; and for mechanical and water absorption, these two properties being better than those of pure PF foams. Indeed, PF resins represent an important part of synthetic resins. They are… More >

  • Open Access

    ARTICLE

    Utilization of Bitter Orange Seed as a Novel Pectin Source: Compositional and Rheological Characterization

    Diako Khodaei1, Mohammad Nejatian2,*, Hassan Ahmadi Gavlighi2, Farhad Garavand3,*, Ilaria Cacciotti4

    Journal of Renewable Materials, Vol.10, No.11, pp. 2805-2817, 2022, DOI:10.32604/jrm.2022.021752

    Abstract The seeds from bitter orange, the by-product of juice making units, hold the potential to facilitate novel, easy yet high-quality pectin extraction. To test this hypothesis, orange seed pectin (OSP) was extracted by distilled water and its compositional parameters and rheological behavior were then evaluated. Results showed that galacturonic acid was the major component of OSP (∼425 mg/g) confirming the purity of the extracted pectin, followed by glucose and some minor neutral sugars. The Mw (weight-average molar mass), Rn (number average molar mass), and Rz (z-average molar mass) values for the OSP were 4511.8 kDa, 61 nm, and 61.1 nm,… More > Graphic Abstract

    Utilization of Bitter Orange Seed as a Novel Pectin Source: Compositional and Rheological Characterization

  • Open Access

    REVIEW

    A Literature Review on Sustainability of Bio-Based and Biodegradable Plastics: Challenges and Opportunities

    Taofeeq D. Moshood, Gusman Nawanir, Fatimah Mahmud*, Fazeeda Mohamad, Mohd Hanafiah Ahmad, Airin AbdulGhani

    Energy Engineering, Vol.119, No.4, pp. 1611-1647, 2022, DOI:10.32604/ee.2022.019028

    Abstract This study examines the literature on bio-based and biodegradable plastics published between 2000 and 2021 and provides insights and research suggestions for the future. The study gathers data from the Scopus and ISI Web of Science databases, then picks 1042 publications objectively and analyses their metadata. Furthermore, 144 papers from the Web of Science are analysed to present insights and classifications of the literature based on content analyses, including assessment/evaluation of the sustainability of bio-based and biodegradable Plastics, sustainability of biodegradable Plastics, and factors driving the uptake of biodegradable plastics. The study finds that most research on bio-based and biodegradable… More >

  • Open Access

    ARTICLE

    A Hybrid Immersed Boundary/Coarse-Graining Method for Modeling Inextensible Semi-Flexible Filaments in Thermally Fluctuating Fluids

    Magdalini Ntetsika, Panayiotis Papadopoulos*

    CMES-Computer Modeling in Engineering & Sciences, Vol.129, No.3, pp. 1243-1258, 2021, DOI:10.32604/cmes.2021.017404

    Abstract A new and computationally efficient version of the immersed boundary method, which is combined with the coarse-graining method, is introduced for modeling inextensible filaments immersed in low-Reynolds number flows. This is used to represent actin biopolymers, which are constituent elements of the cytoskeleton, a complex network-like structure that plays a fundamental role in shape morphology. An extension of the traditional immersed boundary method to include a stochastic stress tensor is also proposed in order to model the thermal fluctuations in the fluid at smaller scales. By way of validation, the response of a single, massless, inextensible semiflexible filament immersed in… More >

  • Open Access

    ARTICLE

    Improving the Unconfined Compressive Strength of Red Clay by Combining Biopolymers with Fibers

    Zhiyu Weng1, Lina Wang1,2,*, Qiang Liu2, Xuemin Pan1, Yonghao Xu3, Jing Li1

    Journal of Renewable Materials, Vol.9, No.8, pp. 1503-1517, 2021, DOI:10.32604/jrm.2021.015003

    Abstract To explore an environmentally friendly improvement measure for red clay, the function and mechanism of xanthan gum biopolymer and polypropylene fibers on the strength properties of red clay were investigated by unconfined compressive strength and scanning electron microscopy tests. The test results demonstrated that the contents and curing ages of xanthan gum had significant influences on the unconfined compressive strength of red clay. Compared with untreated soil, 1.5% xanthan gum content was the optimal ratio in which the strength increment was between 41.52 kPa and 64.73 kPa. On the other hand, the strength of xanthan gum-treated red clay increased, whereas… More >

  • Open Access

    ARTICLE

    New Biobased Polyurethane Materials from Modified Vegetable Oil

    Chakib Mokhtari1, Fouad Malek1, Sami Halila2, Mohamed Naceur Belgacem3,*, Ramzi Khiari3,4,5,*

    Journal of Renewable Materials, Vol.9, No.7, pp. 1213-1223, 2021, DOI:10.32604/jrm.2021.015475

    Abstract Bio-based polyurethanes (PUs) have been occurred a large attention nowadays. It was found to be an alternative to the petrochemical based materials to the fact of their weak environmental influence, availability, good price and biodegradability. In addition, the nature shows several bio-derived compounds as raw materials for the synthesis of polyols, including the vegetable oils, polyphenol, terpene, and other bio-renewable sources. With the aim to develop a new family of biobased polyurethanes (PUs) via vegetable oils, the elaboration of new Jojoba-based PUs was performed by catalyst-free polycondensation reaction of a synthesized Jojoba diol with various diisocyanates such us toluene diisocyanate… More > Graphic Abstract

    New Biobased Polyurethane Materials from Modified Vegetable Oil

  • Open Access

    EDITORIAL

    Special Issue on 15th Brazilian Polymer Conference: Biopolymers, Eco-Friendly and Biodegradable Polymers and Other Topics Related to Polymeric Materials Derived from Renewable Materials

    Antonio Aprigio da Silva Curvelo1, Antonio José Felix Carvalho2,*, Daniel Pasquini3

    Journal of Renewable Materials, Vol.9, No.4, pp. 599-600, 2021, DOI:10.32604/jrm.2021.015335

    Abstract This article has no abstract. More >

Displaying 1-10 on page 1 of 16. Per Page