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Liu M, Imiete IE, Staropoli M, Steiner P, Duez B, Lenoble D, Scolan E, Thomann JS. Hydrophobized MFC as Reinforcing Additive in Industrial Silica/SBR Tire Tread Compound. Polymers (Basel) 2023; 15:3937. [PMID: 37835985 PMCID: PMC10574928 DOI: 10.3390/polym15193937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 09/23/2023] [Accepted: 09/25/2023] [Indexed: 10/15/2023] Open
Abstract
Silica is used as reinforcing filler in the tire industry. Owing to the intensive process of silica production and its high density, substitution with lightweight bio-based micro fibrillated cellulose (MFC) is expected to provide lightweight, sustainable, and highly reinforced tire composite. MFC was modified with oleoyl chloride, and the degree of substitution (DS) was maintained between 0.2 and 0.9. Subsequently, the morphology and crystallinity of the modified MFC were studied and found to be significantly dependent on the DS. The advantages associated with the use of the modified MFC in synergy with silica for the reinforcement of styrene butadiene rubber (SBR) nanocomposite was investigated in comparison with silica/SBR compound. The structural changes occasioned by the DS values influenced the processability, curing kinetics, modulus-rolling resistance tradeoff, and tensile properties of the resultant rubber compounds. We found that the compound made with modified MFC at a DS of 0.67 (MFC16) resulted to the highest reinforcement, with a 350% increase in storage modulus, 180% increase in Young`s modulus, and 15% increase in tensile strength compared to the referenced silica-filled compounds. Our studies show that MFC in combination with silica can be used to reinforce SBR compound for tire tread applications.
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Affiliation(s)
- Ming Liu
- Material Research and Technology Department (MRT), Luxembourg Institute of Science and Technology (LIST), 41 Rue du Brill, L-4422 Belvaux, Luxembourg; (M.L.)
| | - Iikpoemugh Elo Imiete
- Material Research and Technology Department (MRT), Luxembourg Institute of Science and Technology (LIST), 41 Rue du Brill, L-4422 Belvaux, Luxembourg; (M.L.)
| | - Mariapaola Staropoli
- Material Research and Technology Department (MRT), Luxembourg Institute of Science and Technology (LIST), 41 Rue du Brill, L-4422 Belvaux, Luxembourg; (M.L.)
| | - Pascal Steiner
- Goodyear Innovation Center Luxembourg (GIC*L), Avenue Gordon Smith, L-7750 Colmar-Berg, Luxembourg
| | - Benoît Duez
- Goodyear Innovation Center Luxembourg (GIC*L), Avenue Gordon Smith, L-7750 Colmar-Berg, Luxembourg
| | - Damien Lenoble
- Material Research and Technology Department (MRT), Luxembourg Institute of Science and Technology (LIST), 41 Rue du Brill, L-4422 Belvaux, Luxembourg; (M.L.)
| | - Emmanuel Scolan
- Material Research and Technology Department (MRT), Luxembourg Institute of Science and Technology (LIST), 41 Rue du Brill, L-4422 Belvaux, Luxembourg; (M.L.)
| | - Jean-Sébastien Thomann
- Material Research and Technology Department (MRT), Luxembourg Institute of Science and Technology (LIST), 41 Rue du Brill, L-4422 Belvaux, Luxembourg; (M.L.)
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Dmitruk KA, Komova OV, Paletsky AA, Shmakov AG, Mukha SA, Butenko VR, Pochtar AA, Netskina OV. The Use of Hybrid Genetic Algorithm in the Kinetic Analysis of Thermal Decomposition of [Ni(C 2H 8N 2) 3](ClO 4) 2 with Overlapping Stages. MATERIALS (BASEL, SWITZERLAND) 2022; 16:90. [PMID: 36614426 PMCID: PMC9821161 DOI: 10.3390/ma16010090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 12/16/2022] [Accepted: 12/19/2022] [Indexed: 06/17/2023]
Abstract
This work describes the mathematical modeling of the thermal decomposition of the complex compound [Ni(En)3](ClO4)2 (En = C2H8N2 = ethylenediamine) in an inert atmosphere under non-isothermal conditions. This process is characterized by several simultaneous and intense stages: elimination of ethylenediamine from the nickel coordination sphere, decomposition of perchlorate anions, and explosive-like oxidation of free or bound ethylenediamine. These stages overlap and merge into a one step on the differential thermogravimetric curve. Typically, this curve is modeled as a one-stage process during kinetic analysis. In this paper, for the first time, the data from the dynamic mass-spectral thermal analysis and thermogravimetric analysis were modeled using the hybrid genetic algorithm, and the results were compared. A two-stage scheme of [Ni(En)3](ClO4)2 thermolysis was proposed and the kinetic parameters for each stage were obtained. It was shown that the decomposition of [Ni(En)3](ClO4)2 begins with the elimination of one molecule of ethylenediamine (stage A), then the perchlorate anions quickly decompose with the evolution of oxygen (stage B). We believe that the resulting ClO4-x- (x = 1-3), as stronger oxidizing agents, instantly start an explosive-like exothermic process of ethylenediamine oxidation (stage B).
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Affiliation(s)
- Kirill A. Dmitruk
- Boreskov Institute of Catalysis SB RAS, 5 Akademika Lavrentieva Ave., Novosibirsk 630090, Russia
- Department of Natural Sciences, Novosibirsk State University, 1 Pirogova Str., Novosibirsk 630090, Russia
| | - Oksana V. Komova
- Boreskov Institute of Catalysis SB RAS, 5 Akademika Lavrentieva Ave., Novosibirsk 630090, Russia
- Siberian Branch of Russian Academy of Sciences, 17 Akademika Lavrentieva Ave., Novosibirsk 630090, Russia
| | - Alexander A. Paletsky
- Boreskov Institute of Catalysis SB RAS, 5 Akademika Lavrentieva Ave., Novosibirsk 630090, Russia
- Voevodsky Institute of Chemical Kinetics and Combustion SB RAS, 3 Institutskaya Str., Novosibirsk 630090, Russia
| | - Andrey G. Shmakov
- Voevodsky Institute of Chemical Kinetics and Combustion SB RAS, 3 Institutskaya Str., Novosibirsk 630090, Russia
| | - Svetlana A. Mukha
- Boreskov Institute of Catalysis SB RAS, 5 Akademika Lavrentieva Ave., Novosibirsk 630090, Russia
| | - Vladislav R. Butenko
- Boreskov Institute of Catalysis SB RAS, 5 Akademika Lavrentieva Ave., Novosibirsk 630090, Russia
- Department of Natural Sciences, Novosibirsk State University, 1 Pirogova Str., Novosibirsk 630090, Russia
| | - Alena A. Pochtar
- Boreskov Institute of Catalysis SB RAS, 5 Akademika Lavrentieva Ave., Novosibirsk 630090, Russia
- Department of Natural Sciences, Novosibirsk State University, 1 Pirogova Str., Novosibirsk 630090, Russia
| | - Olga V. Netskina
- Boreskov Institute of Catalysis SB RAS, 5 Akademika Lavrentieva Ave., Novosibirsk 630090, Russia
- Department of Natural Sciences, Novosibirsk State University, 1 Pirogova Str., Novosibirsk 630090, Russia
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Hossain N, Chowdhury MA, Noman TI, Rana MM, Ali MH, Alruwais RS, Alam MS, Alamry KA, Aljabri MD, Rahman MM. Synthesis and Characterization of Eco-Friendly Bio-Composite from Fenugreek as a Natural Resource. Polymers (Basel) 2022; 14:polym14235141. [PMID: 36501535 PMCID: PMC9739852 DOI: 10.3390/polym14235141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 11/02/2022] [Accepted: 11/10/2022] [Indexed: 11/30/2022] Open
Abstract
The present study show the usability of starch (tamarind) based-bio-composite film reinforced by fenugreek by various percentages to replace the traditional petrochemical plastics. The prepared bio-composite films were systematically characterized using the universal testing machine (UTM), soil degradation, scanning electron microscope (SEM), X-ray diffraction (XRD), thermogravimetric analyzer (TGA), and antibacterial tests. The experiments showed that a lower percentage of fenugreek improves biodegradation and mechanical strength. More than 60% of biodegradation occurred in only 30 days. Almost 3 N/mm2 tensile strength and 6.5% tensile strain were obtained. The presence of micropores confirmed by SEM images may accelerate the biodegradation process. Antibacterial activity was observed with two samples of synthesized bio-composite, due to photoactive compounds confirmed by FTIR spectra. The glass transition temperature was shown to be higher than the room temperature, with the help of thermal analysis. The prepared bio-composite containing 5% and 10% fenugreek showed antibacterial activities.
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Affiliation(s)
- Nayem Hossain
- Department of Mechanical Engineering, IUBAT-International University of Business Agriculture and Technology, Dhaka 1230, Bangladesh
| | - Mohammad Asaduzzaman Chowdhury
- Department of Mechanical Engineering, Dhaka University of Engineering and Technology (DUET), Gazipur 1700, Bangladesh
- Correspondence: (M.A.C.); (M.D.A.); (M.M.R.)
| | - Tauhidul Islam Noman
- Department of Mechanical Engineering, Dhaka University of Engineering and Technology (DUET), Gazipur 1700, Bangladesh
| | - Md. Masud Rana
- Department of Mechanical Engineering, Dhaka University of Engineering and Technology (DUET), Gazipur 1700, Bangladesh
| | - Md. Hasan Ali
- Department of Mechanical Engineering, Dhaka University of Engineering and Technology (DUET), Gazipur 1700, Bangladesh
| | - Raja Saad Alruwais
- Chemistry Department, Faculty of Science and Humanities, Shaqra University, Dawadmi 11912, Saudi Arabia
| | - Md. Shafiul Alam
- Department of Mechanical Engineering, Dhaka University of Engineering and Technology (DUET), Gazipur 1700, Bangladesh
| | - Khalid A. Alamry
- Chemistry Department, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia
| | - Mahmood D. Aljabri
- Department of Chemistry, University College in Al-Jamoum, Umm Al-Qura University, Makkah 21955, Saudi Arabia
- Correspondence: (M.A.C.); (M.D.A.); (M.M.R.)
| | - Mohammed M. Rahman
- Chemistry Department, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia
- Center of Excellent for Advanced Materials Research (CEAMR) & Department of Chemistry, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia
- Correspondence: (M.A.C.); (M.D.A.); (M.M.R.)
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Application of modified cellulose nanocrystals as nonionic surfactant. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-022-04408-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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5
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Greaseproof, hydrophobic, and biodegradable food packaging bioplastics from C6-fluorinated cellulose esters. Food Hydrocoll 2022. [DOI: 10.1016/j.foodhyd.2022.107562] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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6
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Wang X, Wang N, Xu B, Wang Y, Lang J, Lu J, Chen G, Zhang H. Comparative Study on Different Modified Preparation Methods of Cellulose Nanocrystalline. Polymers (Basel) 2021; 13:polym13193417. [PMID: 34641232 PMCID: PMC8512115 DOI: 10.3390/polym13193417] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Revised: 09/29/2021] [Accepted: 10/01/2021] [Indexed: 11/21/2022] Open
Abstract
Different modification process routes are used to improve the modified cellulose nanocrystalline (MCNC) with higher fatty acid by esterification reaction and graft polymerization to obtain certain hydrophobic properties. Two preparation methods, product structure and surface activity, are compared and explored. Experimental results show that the modified product is still at the nanometer level and basically retains the crystal structure of the raw cellulose nanocrystalline (CNC). The energy consumption of the two preparation methods is low; however, the esterification method with co-reactant requires short reaction time, and the degree of substitution of the product is high. The modified product prepared by grafting polymerization method has a high HLB value and amphiphilicity, which can effectively reduce the surface tension of water. Therefore, it can be used as a green and environmentally friendly surface-active substance.
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Affiliation(s)
- Xinhui Wang
- College of Marine Science and Biological Engineering, Qingdao University of Science & Technology, Qingdao 266042, China; (X.W.); (N.W.); (B.X.); (Y.W.); (J.L.); (J.L.)
| | - Na Wang
- College of Marine Science and Biological Engineering, Qingdao University of Science & Technology, Qingdao 266042, China; (X.W.); (N.W.); (B.X.); (Y.W.); (J.L.); (J.L.)
| | - Baoming Xu
- College of Marine Science and Biological Engineering, Qingdao University of Science & Technology, Qingdao 266042, China; (X.W.); (N.W.); (B.X.); (Y.W.); (J.L.); (J.L.)
| | - Yili Wang
- College of Marine Science and Biological Engineering, Qingdao University of Science & Technology, Qingdao 266042, China; (X.W.); (N.W.); (B.X.); (Y.W.); (J.L.); (J.L.)
| | - Jinyan Lang
- College of Marine Science and Biological Engineering, Qingdao University of Science & Technology, Qingdao 266042, China; (X.W.); (N.W.); (B.X.); (Y.W.); (J.L.); (J.L.)
| | - Junliang Lu
- College of Marine Science and Biological Engineering, Qingdao University of Science & Technology, Qingdao 266042, China; (X.W.); (N.W.); (B.X.); (Y.W.); (J.L.); (J.L.)
- Guangdong Provincial Key Lab of Green Chemical Product Technology, Guangzhou 510640, China
| | - Guorong Chen
- Fujian Provincial Key Laboratory of Fire Retardant Materials, Xiamen 361005, China;
| | - Heng Zhang
- College of Marine Science and Biological Engineering, Qingdao University of Science & Technology, Qingdao 266042, China; (X.W.); (N.W.); (B.X.); (Y.W.); (J.L.); (J.L.)
- Guangdong Provincial Key Lab of Green Chemical Product Technology, Guangzhou 510640, China
- Fujian Provincial Key Laboratory of Fire Retardant Materials, Xiamen 361005, China;
- Correspondence: ; Tel.: +86-1595-480-3800
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7
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Frank BP, Smith C, Caudill ER, Lankone RS, Carlin K, Benware S, Pedersen JA, Fairbrother DH. Biodegradation of Functionalized Nanocellulose. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:10744-10757. [PMID: 34282891 DOI: 10.1021/acs.est.0c07253] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Nanocellulose has attracted widespread interest for applications in materials science and biomedical engineering due to its natural abundance, desirable physicochemical properties, and high intrinsic mineralizability (i.e., complete biodegradability). A common strategy to increase dispersibility in polymer matrices is to modify the hydroxyl groups on nanocellulose through covalent functionalization, but such modification strategies may affect the desirable biodegradation properties exhibited by pristine nanocellulose. In this study, cellulose nanofibrils (CNFs) functionalized with a range of esters, carboxylic acids, or ethers exhibited decreased rates and extents of mineralization by anaerobic and aerobic microbial communities compared to unmodified CNFs, with etherified CNFs exhibiting the highest level of recalcitrance. The decreased biodegradability of functionalized CNFs depended primarily on the degree of substitution at the surface of the material rather than within the bulk. This dependence on surface chemistry was attributed not only to the large surface area-to-volume ratio of nanocellulose but also to the prerequisite surface interaction by microorganisms necessary to achieve biodegradation. Results from this study highlight the need to quantify the type and coverage of surface substituents in order to anticipate their effects on the environmental persistence of functionalized nanocellulose.
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Affiliation(s)
- Benjamin P Frank
- Department of Chemistry, Johns Hopkins University, 3400 N Charles Street, Baltimore, Maryland 21218, United States
| | - Casey Smith
- Department of Chemistry, Johns Hopkins University, 3400 N Charles Street, Baltimore, Maryland 21218, United States
| | - Emily R Caudill
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Ronald S Lankone
- Department of Chemistry, Johns Hopkins University, 3400 N Charles Street, Baltimore, Maryland 21218, United States
| | - Katrina Carlin
- Department of Chemistry, Johns Hopkins University, 3400 N Charles Street, Baltimore, Maryland 21218, United States
| | - Sarah Benware
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Joel A Pedersen
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
- Departments of Soil Science and Civil & Environmental Engineering, University of Wisconsin-Madison, 1525 Observatory Drive, Madison, Wisconsin 53706, United States
| | - D Howard Fairbrother
- Department of Chemistry, Johns Hopkins University, 3400 N Charles Street, Baltimore, Maryland 21218, United States
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Waterproof-breathable films from multi-branched fluorinated cellulose esters. Carbohydr Polym 2021; 271:118031. [PMID: 34364545 DOI: 10.1016/j.carbpol.2021.118031] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 03/11/2021] [Accepted: 03/30/2021] [Indexed: 11/20/2022]
Abstract
Cellulose ester films were prepared by esterification of cellulose with a multibranched fluorinated carboxylic acid, "BRFA" (BRanched Fluorinated Acid), at different anhydroglucose unit:BRFA molar ratios (i.e., 1:0, 10:1, 5:1, and 1:1). Morphological and optical analyses showed that cellulose-BRFA materials at molar ratios 10:1 and 5:1 formed flat and transparent films, while the one at 1:1 M ratio formed rough and translucent films. Degrees of substitution (DS) of 0.06, 0.09, and 0.23 were calculated by NMR for the samples at molar ratios 10:1, 5:1, and 1:1, respectively. ATR-FTIR spectroscopy confirmed the esterification. DSC thermograms showed a single glass transition, typical of amorphous polymers, at -11 °C. The presence of BRFA groups shifted the mechanical behavior from rigid to ductile and soft with increasing DS. Wettability was similar to standard fluoropolymers such as PTFE and PVDF. Finally, breathability and water uptake were characterized and found comparable to materials typically used in textiles.
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Picot-Allain MCN, Emmambux MN. Isolation, Characterization, and Application of Nanocellulose from Agro-industrial By-products: A Review. FOOD REVIEWS INTERNATIONAL 2021. [DOI: 10.1080/87559129.2021.1928689] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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10
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Khaire KC, Moholkar VS, Goyal A. Separation and characterization of cellulose from sugarcane tops and its saccharification by recombinant cellulolytic enzymes. Prep Biochem Biotechnol 2020; 51:811-820. [DOI: 10.1080/10826068.2020.1861011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
| | - Vijayanand Suryakant Moholkar
- Centre for Energy, Indian Institute of Technology Guwahati, Guwahati, India
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, India
| | - Arun Goyal
- Centre for Energy, Indian Institute of Technology Guwahati, Guwahati, India
- Carbohydrate Enzyme Biotechnology Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, India
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Balasubramaniam SL, Patel AS, Nayak B. Surface modification of cellulose nanofiber film with fatty acids for developing renewable hydrophobic food packaging. Food Packag Shelf Life 2020. [DOI: 10.1016/j.fpsl.2020.100587] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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12
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Chong YY, Ng HK, Lee LY, Gan S, Thangalazhy-Gopakumar S. Kinetics and mechanisms for catalytic pyrolysis of empty fruit bunch fibre and cellulose with oxides. SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-03249-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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13
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Bio-Based Poly(butylene succinate)/Microcrystalline Cellulose/Nanofibrillated Cellulose-Based Sustainable Polymer Composites: Thermo-Mechanical and Biodegradation Studies. Polymers (Basel) 2020; 12:polym12071472. [PMID: 32630121 PMCID: PMC7408463 DOI: 10.3390/polym12071472] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 06/26/2020] [Accepted: 06/27/2020] [Indexed: 01/17/2023] Open
Abstract
Biodegradable polymer composites from renewable resources are the next-generation of wood-like materials and are crucial for the development of various industries to meet sustainability goals. Functional applications like packaging, medicine, automotive, construction and sustainable housing are just some that would greatly benefit. Some of the existing industries, like wood plastic composites, already encompass given examples but are dominated by fossil-based polymers that are unsustainable. Thus, there is a background to bring a new perspective approach for the combination of microcrystalline cellulose (MCC) and nanofibrillated cellulose (NFC) fillers in bio-based poly (butylene succinate) matrix (PBS). MCC, NFC and MCC/NFC filler total loading at 40 wt % was used to obtain more insights for wood-like composite applications. The ability to tailor the biodegradable characteristics and the mechanical properties of PBS composites is indispensable for extended applications. Five compositions have been prepared with MCC and NFC fillers using melt blending approach. Young’s modulus in tensile test mode and storage modulus at 20 °C in thermo-mechanical analysis have increased about two-fold. Thermal degradation temperature was increased by approximately 60 °C compared to MCC and NFC. Additionally, to estimate the compatibility of the components and morphology of the composite’s SEM analysis was performed for fractured surfaces. The contact angle measurements testified the developed matrix interphase. Differential scanning calorimetry evidenced the trans-crystallization of the polymer after filler incorporation; the crystallization temperature shifted to the higher temperature region. The MCC has a stronger effect on the crystallinity degree than NFC filler. PBS disintegrated under composting conditions in a period of 75 days. The NFC/MCC addition facilitated the specimens’ decomposition rate up to 60 days
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Anpilova AY, Mastalygina EE, Khrameeva NP, Popov AA. Methods for Cellulose Modification in the Development of Polymeric Composite Materials (Review). RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY B 2020. [DOI: 10.1134/s1990793120010029] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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15
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Ahmed-Haras MR, Kao N, Ward L, Islam MS. Insights into the production and physicochemical properties of oxycellulose microcrystalline with coexisting crystalline forms. Int J Biol Macromol 2020; 146:150-161. [PMID: 31837363 DOI: 10.1016/j.ijbiomac.2019.12.083] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Revised: 12/09/2019] [Accepted: 12/10/2019] [Indexed: 11/30/2022]
Abstract
Oxycellulose microcrystalline (Oxy-MCC) was prepared utilizing nonwood agro-industrial residue, rice husk (RH), via consecutive soda delignification and non-acidic catalytic oxidation. The resultant Oxy-MCC, with a 31 wt% yield, has granular microstructured particles with an average diameter of 41.66 ± 4.11 μm. The porous morphology has been observed in Oxy-MCC micrographs, using scanning electron microscopy (SEM). Fourier transform infrared spectroscopy (FTIR) and TGA/DTG thermal analysis indicated the presence of typical cellulose characteristics, while the presence of carbonyl spectral peak signalized the efficacy of D-RH oxidation process. The x-ray diffraction (XRD) confirmed the coexistence of cellulosic crystalline forms of cellulose I and cellulose II with 84.8% crystallinity index. Significant growth of crystallite size was observed from 1.7 nm (RH) to 9.4 nm (Oxy-MCC). The maximum decomposition temperature (Tmax) was found to be 324 °C, thus indicating good thermal stability. Oxy-MCC showed, overall, attractive thermal and physicochemical properties for oxycellulose nanocrystalline (Oxy-NCC) production.
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Affiliation(s)
| | - Nhol Kao
- Chemical and Environmental Engineering, School of Engineering, RMIT University, VIC 3000, Australia.
| | - Liam Ward
- Chemical and Environmental Engineering, School of Engineering, RMIT University, VIC 3000, Australia
| | - Md Sakinul Islam
- Chemical and Environmental Engineering, School of Engineering, RMIT University, VIC 3000, Australia
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Drying of the Natural Fibers as A Solvent-Free Way to Improve the Cellulose-Filled Polymer Composite Performance. Polymers (Basel) 2020; 12:polym12020484. [PMID: 32098150 PMCID: PMC7077673 DOI: 10.3390/polym12020484] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Revised: 02/08/2020] [Accepted: 02/19/2020] [Indexed: 01/21/2023] Open
Abstract
When considering cellulose (UFC100) modification, most of the processes employ various solvents in the role of the reaction environment. The following article addresses a solvent-free method, thermal drying, which causes a moisture content decrease in cellulose fibers. Herein, the moisture content in UFC100 was analyzed with spectroscopic methods, thermogravimetric analysis, and differential scanning calorimetry. During water desorption, a moisture content drop from approximately 6% to 1% was evidenced. Moreover, drying may bring about a specific variation in cellulose's chemical structure. These changes affected the cellulose-filled polymer composite's properties, e.g., an increase in tensile strength from 17 MPa for the not-dried UFC100 to approximately 30 MPa (dried cellulose; 24 h, 100 °C) was observed. Furthermore, the obtained tensile test results were in good correspondence with Payne effect values, which changed from 0.82 MPa (not-dried UFC100) to 1.21 MPa (dried fibers). This raise proves the reinforcing nature of dried UFC100, as the Payne effect is dependent on the filler structure's development within a polymer matrix. This finding paves new opportunities for natural fiber applications in polymer composites by enabling a solvent-free and efficient cellulose modification approach that fulfils the sustainable development rules.
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Cichosz S, Masek A. Cellulose Fibers Hydrophobization via a Hybrid Chemical Modification. Polymers (Basel) 2019; 11:E1174. [PMID: 31336791 PMCID: PMC6681115 DOI: 10.3390/polym11071174] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 07/04/2019] [Accepted: 07/09/2019] [Indexed: 11/17/2022] Open
Abstract
The following article highlights the importance of an indispensable process in cellulose fibers (UFC100) modification which may change the biopolymer properties-drying. The reader is provided with a broad range of information considering the drying process consequences on the chemical treatment of the cellulose. This research underlines the importance of UFC100 moisture content reduction considering polymer composites application with the employment of a technique different than thermal treating. Therefore, a new hybrid chemical modification approach is introduced. It consists of two steps: solvent exchange (with ethanol either hexane) and chemical treatment (maleic anhydride-MA). With the use of Fourier-transform infrared spectroscopy (FT-IR), it has been proven that the employment of different solvents may contribute to the higher yield of the modification process as they cause rearrangements in hydrogen bonds structure, swell the biopolymer and, therefore, affect its molecular packing. Furthermore, according to the thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC), the improvement in fibers thermal resistance was noticed, e.g., shift in the value of 5% temperature mass loss from 240 °C (regular modification) to 306 °C (while solvent employed). Moreover, the research was broadened with cellulose moisture content influence on the modification process-tested fibers were either dried (D) or not dried (ND) before the hybrid chemical treatment. According to the gathered data, D cellulose exhibits elevated thermal resistance and ND fibers are more prone to the MA modification. What should be emphasized, in the case of all carried out UFC100 treatments, is that a decrease in moisture contend was evidenced-from approximately 4% in case of thermal drying to 1.7% for hybrid chemical modification. This is incredibly promising considering the possibility of the treated fibers application in polymer matrix.
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Affiliation(s)
- Stefan Cichosz
- Lodz University of Technology, Institute of Polymer and Dye Technology, Faculty of Chemistry, Stefanowskiego 12/16, 90-924 Lodz, Poland
| | - Anna Masek
- Lodz University of Technology, Institute of Polymer and Dye Technology, Faculty of Chemistry, Stefanowskiego 12/16, 90-924 Lodz, Poland.
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Shukla P, Bajpai AK, Bajpai R. Designing Cellulose Acetate - Polyacrylamide Semi-Interpenetrating Polymer Networks and Evaluation of their Protein Retention Behavior. POLYM-PLAST TECH MAT 2019. [DOI: 10.1080/03602559.2018.1482923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Pallavi Shukla
- Bose Memorial Research Laboratory, Department of Chemistry, Govt. Autonomous Model Science College, Jabalpur, India
- Department of Physics and Electronics, Rani Durgavati University, Jabalpur, India
| | - Anil Kumar Bajpai
- Bose Memorial Research Laboratory, Department of Chemistry, Govt. Autonomous Model Science College, Jabalpur, India
| | - Rakesh Bajpai
- Department of Physics and Electronics, Rani Durgavati University, Jabalpur, India
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Balart R, Garcia-Sanoguera D, Quiles-Carrillo L, Montanes N, Torres-Giner S. Kinetic Analysis of the Thermal Degradation of Recycled Acrylonitrile-Butadiene-Styrene by non-Isothermal Thermogravimetry. Polymers (Basel) 2019; 11:E281. [PMID: 30960265 PMCID: PMC6419052 DOI: 10.3390/polym11020281] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 02/05/2019] [Accepted: 02/06/2019] [Indexed: 11/24/2022] Open
Abstract
This work presents an in-depth kinetic study of the thermal degradation of recycled acrylonitrile-butadiene-styrene (ABS) polymer. Non-isothermal thermogravimetric analysis (TGA) data in nitrogen atmosphere at different heating rates comprised between 2 and 30 K min-1 were used to obtain the apparent activation energy (Ea) of the thermal degradation process of ABS by isoconversional (differential and integral) model-free methods. Among others, the differential Friedman method was used. Regarding integral methods, several methods with different approximations of the temperature integral were used, which gave different accuracies in Ea. In particular, the Flynn-Wall-Ozawa (FWO), the Kissinger-Akahira-Sunose (KAS), and the Starink methods were used. The results obtained by these methods were compared to the Kissinger method based on peak temperature (Tm) measurements at the maximum degradation rate. Combined Kinetic Analysis (CKA) was also carried out by using a modified expression derived from the general Sestak-Berggren equation with excellent results compared with the previous methods. Isoconversional methods revealed negligible variation of Ea with the conversion. Furthermore, the reaction model was assessed by calculating the characteristic y ( α ) and z ( α ) functions and comparing them with some master plots, resulting in a nth order reaction model with n = 1.4950, which allowed calculating the pre-exponential factor (A) of the Arrhenius constant. The results showed that Ea of the thermal degradation of ABS was 163.3 kJ mol-1, while ln A was 27.5410 (A in min-1). The predicted values obtained by integration of the general kinetic expression with the calculated kinetic triplet were in full agreement with the experimental data, thus giving evidence of the accuracy of the obtained kinetic parameters.
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Affiliation(s)
- Rafael Balart
- Technological Institute of Materials (ITM), Universitat Politècnica de València (UPV), Plaza Ferrándiz y Carbonell 1, 03801 Alcoy, Spain.
| | - David Garcia-Sanoguera
- Technological Institute of Materials (ITM), Universitat Politècnica de València (UPV), Plaza Ferrándiz y Carbonell 1, 03801 Alcoy, Spain.
| | - Luis Quiles-Carrillo
- Technological Institute of Materials (ITM), Universitat Politècnica de València (UPV), Plaza Ferrándiz y Carbonell 1, 03801 Alcoy, Spain.
| | - Nestor Montanes
- Technological Institute of Materials (ITM), Universitat Politècnica de València (UPV), Plaza Ferrándiz y Carbonell 1, 03801 Alcoy, Spain.
| | - Sergio Torres-Giner
- Novel Materials and Nanotechnology Group, Institute of Agrochemistry and Food Technology (IATA), Spanish National Research Council (CSIC), Calle Catedrático Agustín Escardino Benlloch 7, Paterna, 46980 Valencia, Spain.
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Botlhoko OJ, Makwakwa D, Ray SS, Ramontja J. Enzymatic degradation, electronic, and thermal properties of graphite- and graphene oxide-filled biodegradable polylactide/poly(ε-caprolactone) blend composites. J Appl Polym Sci 2018. [DOI: 10.1002/app.47387] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Orebotse Joseph Botlhoko
- Department of Applied Chemistry; University of Johannesburg; Doornfontein, 2028 Johannesburg South Africa
- DST-CSIR National Centre for Nanostructured Materials; Council for Scientific and Industrial Research; Pretoria 0001 South Africa
| | - Dimakatso Makwakwa
- Department of Applied Chemistry; University of Johannesburg; Doornfontein, 2028 Johannesburg South Africa
- DST-CSIR National Centre for Nanostructured Materials; Council for Scientific and Industrial Research; Pretoria 0001 South Africa
| | - Suprakas Sinha Ray
- Department of Applied Chemistry; University of Johannesburg; Doornfontein, 2028 Johannesburg South Africa
- DST-CSIR National Centre for Nanostructured Materials; Council for Scientific and Industrial Research; Pretoria 0001 South Africa
| | - James Ramontja
- Department of Applied Chemistry; University of Johannesburg; Doornfontein, 2028 Johannesburg South Africa
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21
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Synthesis of unsaturated polyester resin from waste cellulose and polyethylene terephthalate. Polym Bull (Berl) 2018. [DOI: 10.1007/s00289-018-2576-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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22
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Lipophilization of chitin as novel polymeric stabilizer for improved oil-in-water emulsions. Colloid Polym Sci 2018. [DOI: 10.1007/s00396-018-4410-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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23
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Cichosz S, Masek A, Wolski K, Zaborski M. Universal approach of cellulose fibres chemical modification result analysis via commonly used techniques. Polym Bull (Berl) 2018. [DOI: 10.1007/s00289-018-2487-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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24
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Botlhoko OJ, Ramontja J, Ray SS. A new insight into morphological, thermal, and mechanical properties of melt-processed polylactide/poly(ε-caprolactone) blends. Polym Degrad Stab 2018. [DOI: 10.1016/j.polymdegradstab.2018.05.025] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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25
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Chin KM, Sung Ting S, Ong HL, Omar M. Surface functionalized nanocellulose as a veritable inclusionary material in contemporary bioinspired applications: A review. J Appl Polym Sci 2017. [DOI: 10.1002/app.46065] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Kwok-Mern Chin
- School of Bioprocess Engineering; Universiti Malaysia Perlis (UniMAP); Arau Perlis 02600 Malaysia
| | - Sam Sung Ting
- School of Bioprocess Engineering; Universiti Malaysia Perlis (UniMAP); Arau Perlis 02600 Malaysia
| | - Hui Lin Ong
- School of Materials Engineering; Universiti Malaysia Perlis (UniMAP); Arau Perlis 02600 Malaysia
| | - Mf Omar
- School of Materials Engineering; Universiti Malaysia Perlis (UniMAP); Arau Perlis 02600 Malaysia
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26
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Monika, Dhar P, Katiyar V. Thermal degradation kinetics of polylactic acid/acid fabricated cellulose nanocrystal based bionanocomposites. Int J Biol Macromol 2017. [DOI: 10.1016/j.ijbiomac.2017.06.039] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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27
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Cellulose-polyhydroxylated fatty acid ester-based bioplastics with tuning properties: Acylation via a mixed anhydride system. Carbohydr Polym 2017; 173:312-320. [DOI: 10.1016/j.carbpol.2017.05.068] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Revised: 05/19/2017] [Accepted: 05/22/2017] [Indexed: 11/17/2022]
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28
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Preparation and characterization of cellulose laurate ester by catalyzed transesterification. Carbohydr Polym 2017; 168:247-254. [DOI: 10.1016/j.carbpol.2017.03.074] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2016] [Revised: 03/22/2017] [Accepted: 03/23/2017] [Indexed: 11/17/2022]
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5000 h Multi-Factor Accelerated Aging Test of FRP Made Transmission Tower: Characterization, Thermal Decomposition and Reaction Kinetics Study. Polymers (Basel) 2017; 9:polym9050170. [PMID: 30970849 PMCID: PMC6432212 DOI: 10.3390/polym9050170] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Revised: 05/03/2017] [Accepted: 05/06/2017] [Indexed: 12/05/2022] Open
Abstract
Three kinds of fiber reinforced plastic (FRP) composites, including modified polyurethane resin (LGD), epoxy resin (E44) and modified unsaturated polyester resin (D33) glass-fiber reinforced plastics, were subjected to a 5000 h multi-factor accelerated aging test according to the power industry standard. To examine aging resistance and thermal stability of transmission towers made by these three composites, relevant bending properties, thermogravimetric analysis (TGA) and derivative thermogravimetry (DTG), activation energy, as well as microscopic morphology were revealed. The results showed that for these composites, bending modulus retention rates were higher than 94% under the aging test and that of the LGD was highest. Additionally, the onset degradation temperature, temperature at maximum rate of weight loss and T5% reduced at 5000 h, with D33 having highest value and lowest decline rate. The activation energy was calculated with the Bagchi, Coats-Redfern and Broido method, respectively. Although the activation energy of all composites decreased after test, the D33, LGD materials had the highest activation energy which enjoys slight decline. Analysis of the whole experimental results suggested that D33 and LGD composites have good aging resistance, whose basic performance could still perform well after 5000 h aging test, so they can be used to composite towers and applied to engineering practice.
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Bernhardt DC, Pérez CD, Fissore EN, De'Nobili MD, Rojas AM. Pectin-based composite film: Effect of corn husk fiber concentration on their properties. Carbohydr Polym 2017; 164:13-22. [PMID: 28325309 DOI: 10.1016/j.carbpol.2017.01.031] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Revised: 12/21/2016] [Accepted: 01/06/2017] [Indexed: 11/16/2022]
Abstract
Considering the polysaccharide composition and 32% of crystallinity of the water insoluble fiber extracted from corn husk (CHF) agricultural residue, its filler performance as water vapor permeability (WVP) and mechanical modifier in edible films based on commercial low methoxyl pectin (LMP) was evaluated (0, 1, 3, 5, 8% concentrations). The 53-μm-CHF carried phenolics and carotenes, and composites showed antioxidant capacity. Homogeneous films with a continuous LMP matrix were obtained. The 5%-CHF composite showed the highest surface contact angle (44°) and tensile strength, without change in elongation, while WVP was decreased in the 3-8% CHF-LMP-films. The latter was ascribed to the CHF-filler crystallinity whereas the improvement in mechanical performance and contact angle was attributed to a CHF-interconnected network formed at 5%-CHF critical concentration. Corn husk residue can be utilized as a source of fibers for material development. Composites with enhanced performance can be an antioxidant strategy at food interfaces.
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Affiliation(s)
- Dana C Bernhardt
- Departamento de Industrias, Facultad de Ciencias Exactas y Naturales, University of Buenos Aires, Ciudad Universitaria, C1428BGA, Buenos Aires, Argentina; The National Research Council of Argentina (CONICET), Argentina
| | - Carolina D Pérez
- Instituto de Tecnología de Alimentos (ITA), INTA-Castelar, Buenos Aires Province, Argentina; The National Research Council of Argentina (CONICET), Argentina
| | - Eliana N Fissore
- Departamento de Industrias, Facultad de Ciencias Exactas y Naturales, University of Buenos Aires, Ciudad Universitaria, C1428BGA, Buenos Aires, Argentina; The National Research Council of Argentina (CONICET), Argentina
| | - Maria D De'Nobili
- Departamento de Industrias, Facultad de Ciencias Exactas y Naturales, University of Buenos Aires, Ciudad Universitaria, C1428BGA, Buenos Aires, Argentina; The National Research Council of Argentina (CONICET), Argentina
| | - Ana M Rojas
- Departamento de Industrias, Facultad de Ciencias Exactas y Naturales, University of Buenos Aires, Ciudad Universitaria, C1428BGA, Buenos Aires, Argentina; The National Research Council of Argentina (CONICET), Argentina.
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31
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Huang F, Wu X, Yu Y, Lu Y, Chen Q. Acylation of cellulose nanocrystals with acids/trifluoroacetic anhydride and properties of films from esters of CNCs. Carbohydr Polym 2017; 155:525-534. [DOI: 10.1016/j.carbpol.2016.09.010] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Revised: 08/17/2016] [Accepted: 09/03/2016] [Indexed: 10/21/2022]
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32
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Sadia M, Sośnicka A, Arafat B, Isreb A, Ahmed W, Kelarakis A, Alhnan MA. Adaptation of pharmaceutical excipients to FDM 3D printing for the fabrication of patient-tailored immediate release tablets. Int J Pharm 2016; 513:659-668. [DOI: 10.1016/j.ijpharm.2016.09.050] [Citation(s) in RCA: 198] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Revised: 09/13/2016] [Accepted: 09/14/2016] [Indexed: 11/30/2022]
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Influence of Processing Conditions on the Thermal Stability and Mechanical Properties of PP/Silica-Lignin Composites. INT J POLYM SCI 2016. [DOI: 10.1155/2016/1627258] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Functional silica-lignin dual fillers were obtained via mechanical grinding of the components (Syloid 244 silica and kraft lignin). Of particular importance here is the fact that lignin is a natural polymer and particularly that it is a waste by-product of paper production, whose recycling is highly desirable. The product underwent comprehensive dispersive-morphological and thermal analysis. SiO2-lignin hybrid fillers were also used in polypropylene-based composites, extruded via corotating a twin screw machine with different screw speeds. The thermogravimetric data obtained for the extrudates confirmed that the application of the lignin into PP produces a significant char residue. Addition of silica to lignin via this new hybrid formulation has a positive effect on the thermal stability of PP/silica-lignin composites, which can be seen even when observing the temperature for the maximum rate of weight reduction. Tensile test results show that the addition of silica by means of dual filler incorporation improves the mechanical parameters in comparison with pure PP and PP/lignin composite.
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Preparation and Properties of Cellulose Laurate (CL)/Starch Nanocrystals Acetate (SNA) Bio-nanocomposites. Polymers (Basel) 2015. [DOI: 10.3390/polym7071331] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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35
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Krasnou I, Tarasova E, Märtson T, Krumme A. Thermoplastic Cellulose Stearate and Cellulose Laurate: Melt Rheology, Processing and Application Potential. INT POLYM PROC 2015. [DOI: 10.3139/217.2980] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
In this work thermoplastic materials from cellulose fatty acid esters were manufactured, their properties described and application and processing perspectives evaluated. Rheological properties of some cellulose esters in melt were studied under conditions similar to those usually used in industrial polymer processing. Thermoplastic properties of cellulose esters were compared with properties of low density polyethylene under the same conditions. It was discovered that long chain fatty acid cellulose esters could be processed in the same way as commodity polymers, but these materials need further improvement for being industrially applied as thermoplastic polymers.
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Affiliation(s)
- I. Krasnou
- Department of Polymer Materials , Tallinn University of Technology, Tallinn , Estonia
| | - E. Tarasova
- Department of Polymer Materials , Tallinn University of Technology, Tallinn , Estonia
| | - T. Märtson
- Department of Polymer Materials , Tallinn University of Technology, Tallinn , Estonia
| | - A. Krumme
- Department of Polymer Materials , Tallinn University of Technology, Tallinn , Estonia
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Vieyra H, San Martín-Martínez E, Juárez E, Figueroa-López U, Aguilar-Méndez MA. Biodegradation process of a blend of thermoplastic unripe banana flour-polyethylene under composting: Identification of the biodegrading agent. J Appl Polym Sci 2015. [DOI: 10.1002/app.42258] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Horacio Vieyra
- Instituto Politécnico Nacional, Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada; Legaria 694, Colonia Irrigación C.P. 11500 México D. F
- Instituto Tecnológico y de Estudios Superiores de Monterrey, Carretera Lago de Guadalupe Km.3.5; Colonia Margarita Maza de Juárez, C.P. 52926 Atizapán de Zaragoza México
| | - Eduardo San Martín-Martínez
- Instituto Politécnico Nacional, Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada; Legaria 694, Colonia Irrigación C.P. 11500 México D. F
| | - Esmeralda Juárez
- Departamento de investigación en Microbiología; Instituto Nacional de Enfermedades Respiratorias; Calzada de Tlalpan No. 4502, Col. Sección XVI C.P. 14080 México, D.F
| | - Ulises Figueroa-López
- Instituto Tecnológico y de Estudios Superiores de Monterrey, Carretera Lago de Guadalupe Km.3.5; Colonia Margarita Maza de Juárez, C.P. 52926 Atizapán de Zaragoza México
| | - Miguel A. Aguilar-Méndez
- Instituto Politécnico Nacional, Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada; Legaria 694, Colonia Irrigación C.P. 11500 México D. F
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Influence of Strong Acid Hydrolysis Processing on the Thermal Stability and Crystallinity of Cellulose Isolated from Wheat Straw. INTERNATIONAL JOURNAL OF CHEMICAL ENGINEERING 2015. [DOI: 10.1155/2015/658163] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Cellulose extractions from wheat straw via hydrochloric, nitric, and sulfuric acid hydrolysis methods were carried out. X-ray diffraction spectral analyses reveal that depending on the acid conditions used the structure of the cellulose exhibited a mixture of polymorphs (i.e., CI and CIII cellulose phases). In addition, the percent crystallinity, diameter, and length of the cellulose fibers varied tremendously as determined by X-ray diffraction and scanning electron microscopy. Thermal gravimetric analysis measurements revealed that the thermal stability of the extracted cellulose varied as a function of the acid strength and conditions used. Scanning electron microscopy analysis revealed that the aggregation of cellulose fibers during the drying process is strongly dependent upon the drying process and strength of the acids used.
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Influence of Surface Treatment on Tensile Properties of Low-Density Polyethylene/Cellulose Woven Biocomposites: A Preliminary Study. Polymers (Basel) 2014. [DOI: 10.3390/polym6092345] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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39
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Song SH, Kim JE, Lee YJ, Kwak MH, Sung GY, Kwon SH, Son HJ, Lee HS, Jung YJ, Hwang DY. Cellulose film regenerated from Styela clava tunics have biodegradability, toxicity and biocompatibility in the skin of SD rats. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2014; 25:1519-1530. [PMID: 24577945 DOI: 10.1007/s10856-014-5182-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2013] [Accepted: 02/17/2014] [Indexed: 06/03/2023]
Abstract
Cellulose is one of the most widespread biomolecules in nature and has been exploited in various applications including scaffolding, tissue engineering, and tissue formation. To evaluate the biocompatibility of cellulose film manufactured from Styela clava tunics (SCT-CF), these films were implanted in Sprague-Dawley (SD) rats for various lengths of time, after which they were subjected to mechanical and biological analyses. The cellulose powders (12-268 m) obtained from SCT was converted into films via casting methods without adding any additives. SCT-CF contained about 98 % α-cellulose and very low concentrations of ββ-cellulose. Additionally, the crystallinity index (CrI) of SCT-CF was lower (10.71 %) than that of wood pulp-cellulose films (WP-CF) (33.78 %). After implantation for 90 days, the weight loss and formation of surface corrugations were greater in SCT-CF than that of WP-CF, while the surface roughness was significantly higher in WP-CF than SCT-CF. However, there were no differences in the number of white blood cells between SCT-CF implanted rats and vehicle implanted rats. The level of metabolic enzymes representing liver and kidney toxicity in the serum of SCT-CF implanted rats was maintained at levels consistent with vehicle implanted rats. Moreover, no significant alteration of the epidermal hyperplasia, inflammatory cell infiltration, redness, and edema were observed in SD rats implanted with SCT-CF. Taken together, these results indicate that SCT-CF showed good degradability and non-toxicity without inducing an immune response in SD rats. Further, the data presented here constitute strong evidence that SCT-CF has the potential for use as a powerful biomaterial for medical applications including stitching fiber, wound dressing, scaffolding, absorbable hemostats and hemodialysis membrane.
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Affiliation(s)
- Sung Hwa Song
- Department of Biomaterials Science, College of Natural Resources & Life Science/Life and Industry Convergence Research Institute, Pusan National University, 50 Cheonghak-ri, Samnangjin-eup Miryang-si, Gyeongsangnam-do, Miryang, 627-706, Korea
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