51
|
Xu P, Zeng Q, Cao Y, Ma P, Dong W, Chen M. Interfacial modification on polyhydroxyalkanoates/starch blend by grafting in-situ. Carbohydr Polym 2017; 174:716-722. [DOI: 10.1016/j.carbpol.2017.06.048] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2017] [Revised: 06/10/2017] [Accepted: 06/13/2017] [Indexed: 11/27/2022]
|
52
|
Huerta-Angeles G, Brandejsová M, Nigmatullin R, Kopecká K, Vágnerová H, Šmejkalová D, Roy I, Velebný V. Synthesis of graft copolymers based on hyaluronan and poly(3-hydroxyalkanoates). Carbohydr Polym 2017; 171:220-228. [DOI: 10.1016/j.carbpol.2017.05.011] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Revised: 05/02/2017] [Accepted: 05/03/2017] [Indexed: 12/17/2022]
|
53
|
Dhar P, Gaur SS, Soundararajan N, Gupta A, Bhasney SM, Milli M, Kumar A, Katiyar V. Reactive Extrusion of Polylactic Acid/Cellulose Nanocrystal Films for Food Packaging Applications: Influence of Filler Type on Thermomechanical, Rheological, and Barrier Properties. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.6b04699] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Prodyut Dhar
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India
| | - Surendra Singh Gaur
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India
| | - Narendren Soundararajan
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India
| | - Arvind Gupta
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India
| | - Siddharth Mohan Bhasney
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India
| | - Medha Milli
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India
| | - Amit Kumar
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India
| | - Vimal Katiyar
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India
| |
Collapse
|
54
|
Chemical modification of nanocellulose with canola oil fatty acid methyl ester. Carbohydr Polym 2017; 169:108-116. [PMID: 28504126 DOI: 10.1016/j.carbpol.2017.04.008] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Accepted: 04/03/2017] [Indexed: 12/27/2022]
Abstract
Cellulose nanocrystals (CNCs), produced from dissolving wood pulp, were chemically functionalized by transesterification with canola oil fatty acid methyl ester (CME). CME performs as both the reaction reagent and solvent. Transesterified CNC (CNCFE) was characterized for their chemical structure, morphology, crystalline structure, thermal stability, and hydrophobicity. Analysis by Fourier transform infrared (FTIR) and FT-Raman spectroscopies showed that the long chain hydrocarbon structure was successfully grafted onto CNC surfaces. After transesterification the crystal size and crystallinity of nanocrystals were not changed as determined by Raman spectroscopy and wide angle X-ray diffraction (XRD). CNCFE showed higher thermal stability and smaller particle size than unmodified CNCs. Water contact angle measurement indicated the CNCFE surface has significantly higher hydrophobicity than unmodified CNCs. The transesterified CNCs could be potentially used as hydrophobic coatings and reinforcing agents to hydrophobic polymer for nanocomposites.
Collapse
|
55
|
Quasi-Static Compression and Low-Velocity Impact Behavior of Tri-Axial Bio-Composite Structural Panels Using a Spherical Head. MATERIALS 2017; 10:ma10020185. [PMID: 28772542 PMCID: PMC5459109 DOI: 10.3390/ma10020185] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Revised: 01/20/2017] [Accepted: 02/10/2017] [Indexed: 11/16/2022]
Abstract
This paper presents experimental results of both quasi-static compression and low-velocity impact behavior for tri-axial bio-composite structural panels using a spherical load head. Panels were made having different core and face configurations. The results showed that panels made having either carbon fiber fabric composite faces or a foam-filled core had significantly improved impact and compressive performance over panels without either. Different localized impact responses were observed based on the location of the compression or impact relative to the tri-axial structural core; the core with a smaller structural element had better impact performance. Furthermore, during the early contact phase for both quasi-static compression and low-velocity impact tests, the panels with the same configuration had similar load-displacement responses. The experimental results show basic compression data could be used for the future design and optimization of tri-axial bio-composite structural panels for potential impact applications.
Collapse
|
56
|
Effect of silicone oil heat treatment on the chemical composition, cellulose crystalline structure and contact angle of Chinese parasol wood. Carbohydr Polym 2017; 164:179-185. [PMID: 28325315 DOI: 10.1016/j.carbpol.2017.01.076] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Revised: 01/19/2017] [Accepted: 01/21/2017] [Indexed: 11/21/2022]
Abstract
The effect of silicone oil heat treatment (SOTH) on the chemical composition, cellulose crystalline structure, thermal degradation and contact angle of Chinese parasol wood were examined in this study. Samples were heated at 150°C, 180°C and 210°C for 2h and 8h, after SOHT chemical composition, fourier transformed infrared (FTIR), thermogravimetric analysis (TGA) and X-ray diffraction (XRD) of the treated samples were evaluated. Results showed that the chemical components of the wood were affected after SOHT particularly when treated at 210°C for 8h. Changes in the chemical components was due to the degradation of biopolymer components of the wood during SOHT. The crystallinity index of cellulose and contact angle of the SOHT samples was increased. The findings demonstrate the potential of SOHT for modification of wood. Thus an economical and eco-friendly approach to thermally modified wood was achieved in this study.
Collapse
|
57
|
Yin J, Yuan T, Lu Y, Song K, Li H, Zhao G, Yin Y. Effect of compression combined with steam treatment on the porosity, chemical compositon and cellulose crystalline structure of wood cell walls. Carbohydr Polym 2017; 155:163-172. [PMID: 27702500 DOI: 10.1016/j.carbpol.2016.08.013] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2016] [Revised: 08/03/2016] [Accepted: 08/04/2016] [Indexed: 01/05/2023]
Abstract
The changes of porosity, chemical composition and cellulose crystalline structure of Spruce (Picea abies Karst.) wood cell walls due to compression combined with steam treatment (CS-treatment) were investigated by nitrogen adsorption, confocal Raman microscopy (CRM) and X-ray diffraction (XRD), respectively. A number of slit-shaped mesopores with a diameter of 3.7nm was formed for the CS-treated wood, and more mesopores were found in the steam-treated wood. CRM results revealed cellulose structure was affected by treatment and β-aryl-ether links associated to guaiacyl units of lignin was depolymerized followed by re-condensation reactions. The crystallinity index (CrI) and crystallite thickness (D200) of cellulose for CS-treated wood were largely increased due to crystallization in the semicrystalline region. Higher degree of increase in both CrI and D200 was observed in both the earlywood and latewood of steam-treated wood, ascribing to the greater amount of mesopores in steam-treated wood than CS-treated wood.
Collapse
Affiliation(s)
- Jiangping Yin
- Department of Wood Anatomy and Utilization, Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing 100091, China
| | - Tongqi Yuan
- Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China
| | - Yun Lu
- Department of Wood Anatomy and Utilization, Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing 100091, China
| | - Kunlin Song
- School of Renewable Natural Resources, Louisiana State University, Baton Rouge, LA 70803, USA
| | - Hanyin Li
- College of Materials Science and Technology, Beijing Forestry University, Beijing 100083, China
| | - Guangjie Zhao
- College of Materials Science and Technology, Beijing Forestry University, Beijing 100083, China
| | - Yafang Yin
- Department of Wood Anatomy and Utilization, Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing 100091, China.
| |
Collapse
|
58
|
Ke Y, Zhang X, Ramakrishna S, He L, Wu G. Reactive blends based on polyhydroxyalkanoates: Preparation and biomedical application. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 70:1107-1119. [DOI: 10.1016/j.msec.2016.03.114] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2016] [Revised: 03/06/2016] [Accepted: 03/31/2016] [Indexed: 01/11/2023]
|
59
|
Garcia-Garcia D, Rayón E, Carbonell-Verdu A, Lopez-Martinez J, Balart R. Improvement of the compatibility between poly(3-hydroxybutyrate) and poly(ε-caprolactone) by reactive extrusion with dicumyl peroxide. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2016.11.018] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
60
|
Ren D, Zhang XX, Wang HK, Li WJ, Yu Y. Improving thermo-oxidative degradation resistance of bamboo fiber reinforced polypropylene composite with antioxidants. Part I: Screening of antioxidants. J Appl Polym Sci 2016. [DOI: 10.1002/app.44198] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- D. Ren
- Department of Biomaterials; International Center for Bamboo and Rattan; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
- Key Laboratory of Bamboo and Rattan Science & Technology; State Forestry Administration; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
| | - X. X. Zhang
- Department of Biomaterials; International Center for Bamboo and Rattan; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
- Key Laboratory of Bamboo and Rattan Science & Technology; State Forestry Administration; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
| | - H. K. Wang
- Department of Biomaterials; International Center for Bamboo and Rattan; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
- Key Laboratory of Bamboo and Rattan Science & Technology; State Forestry Administration; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
| | - W. J. Li
- Department of Biomaterials; International Center for Bamboo and Rattan; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
- Key Laboratory of Bamboo and Rattan Science & Technology; State Forestry Administration; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
| | - Y. Yu
- Department of Biomaterials; International Center for Bamboo and Rattan; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
- Key Laboratory of Bamboo and Rattan Science & Technology; State Forestry Administration; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
| |
Collapse
|
61
|
Song K, Wu Q, Li M, Ren S, Dong L, Zhang X, Lei T, Kojima Y. Water-based bentonite drilling fluids modified by novel biopolymer for minimizing fluid loss and formation damage. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2016.07.092] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
62
|
A Review on Grafting of Biofibers for Biocomposites. MATERIALS 2016; 9:ma9040303. [PMID: 28773429 PMCID: PMC5502996 DOI: 10.3390/ma9040303] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Revised: 04/14/2016] [Accepted: 04/18/2016] [Indexed: 12/18/2022]
Abstract
A recent increase in the use of biofibers as low-cost and renewable reinforcement for the polymer biocomposites has been seen globally. Biofibers are classified into: lignocellulosic fibers (i.e., cellulose, wood and natural fibers), nanocellulose (i.e., cellulose nanocrystals and cellulose nanofibrils), and bacterial cellulose, while polymer matrix materials can be petroleum based or bio-based. Green biocomposites can be produced using both biobased fibers and polymers. Incompatibility between the hydrophilic biofibers and hydrophobic polymer matrix can cause performance failure of resulting biocomposites. Diverse efforts have focused on the modification of biofibers in order to improve the performances of biocomposites. “Grafting” copolymerization strategy can render the advantages of biofiber and impart polymer properties onto it and the performance of biocomposites can be tuned through changing grafting parameters. This review presents a short overview of various “grafting” methods which can be directly or potentially employed to enhance the interaction between biofibers and a polymer matrix for biocomposites. Major grafting techniques, including ring opening polymerization, grafting via coupling agent and free radical induced grafting, have been discussed. Improved properties such as mechanical, thermal, and water resistance have provided grafted biocomposites with new opportunities for applications in specific industries.
Collapse
|
63
|
Wei L, McDonald AG. Accelerated weathering studies on the bioplastic, poly(3-hydroxybutyrate-co-3-hydroxyvalerate). Polym Degrad Stab 2016. [DOI: 10.1016/j.polymdegradstab.2016.01.023] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
64
|
|
65
|
Liu R, Chen Y, Cao J. Effects of Modifier Type on Properties of in Situ Organo-Montmorillonite Modified Wood Flour/Poly(lactic acid) Composites. ACS APPLIED MATERIALS & INTERFACES 2016; 8:161-168. [PMID: 26671464 DOI: 10.1021/acsami.5b07989] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Wood flour (WF) was modified with sodium-montmorillonite (Na-MMT) and two types of surfactant modifiers, namely, didecyl dimethylammonium chloride (DDAC) and sodium dodecyl sulfonate (SDS) though a two-step process inside WF. The thus-modified WFs were characterized, and the effects of MMT type on physical, mechanical, and thermal properties of their composites with poly(lactic acid) (PLA) were investigated. The results showed: (1) either DDAC or SDS could modified Na-MMT into OMMT, and then uniformly distributed in WF cell walls; (2) OMMT improved the physical properties, most mechanical properties, and thermal properties of the composites except for the impact strength; and (3) compared with SDS, DDAC seemed to perform better in properties of composites. However, DDAC showed some negative effect on the early stage of composite thermal decomposition.
Collapse
Affiliation(s)
- Ru Liu
- Research Institute of Wood Industry, Chinese Academy of Forestry, Haidian 100091, Beijing, China
| | - Yu Chen
- MOE Key Laboratory of Wooden Material Science and Application, Beijing Forestry University , Qinghua East Road 35, Haidian 100083, Beijing, China
| | - Jinzhen Cao
- MOE Key Laboratory of Wooden Material Science and Application, Beijing Forestry University , Qinghua East Road 35, Haidian 100083, Beijing, China
| |
Collapse
|
66
|
Nanocomposites with functionalised polysaccharide nanocrystals through aqueous free radical polymerisation promoted by ozonolysis. Carbohydr Polym 2016; 135:256-66. [DOI: 10.1016/j.carbpol.2015.09.005] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2015] [Revised: 08/27/2015] [Accepted: 09/01/2015] [Indexed: 11/23/2022]
|
67
|
Santos FAD, Iulianelli GCV, Tavares MIB. The Use of Cellulose Nanofillers in Obtaining Polymer Nanocomposites: Properties, Processing, and Applications. ACTA ACUST UNITED AC 2016. [DOI: 10.4236/msa.2016.75026] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
68
|
Wei L, Liang S, Coats ER, McDonald AG. Valorization of residual bacterial biomass waste after polyhydroxyalkanoate isolation by hydrothermal treatment. BIORESOURCE TECHNOLOGY 2015; 198:739-745. [PMID: 26454039 DOI: 10.1016/j.biortech.2015.09.086] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Revised: 09/23/2015] [Accepted: 09/24/2015] [Indexed: 06/05/2023]
Abstract
Hydrothermal treatment (HTT) was used to convert residual bacterial biomass (RBB), recovered from poly(3-hydroxybutyrate-co-3-hydroxyvalerate) production, into valuable bioproducts. The effect of processing temperatures (150, 200, and 250°C) on the bioproducts (water-solubles (WSs), bio-oil, insoluble residue, and gas) was investigated. The yields of bio-oil and gas were higher at higher temperatures. The maximum WS content (28 wt%) was obtained at 200°C. GCMS analysis showed higher content of aromatics and N-containing compounds with increasing temperature. ESI-MS revealed chemical compounds (e.g. protein, carbohydrate, lipids, and lignin) associated with RBB are fragmented into smaller molecules (monomers) at higher HTT temperatures. The WS fraction contained totally 838, 889 and 886mg/g acids and 160, 31 and 21 mg/g carbohydrate for HTT at 150, 200, and 250°C, respectively. The solid residues contain unconverted compounds, especially after HTT at 150°C. The WS products (acids and carbohydrates) could be used directly for PHA biosynthesis.
Collapse
Affiliation(s)
- Liqing Wei
- Renewable Materials Program, Department of Forest, Rangeland and Fire Sciences, University of Idaho, Moscow, ID 83844-1132, USA
| | - Shaobo Liang
- Renewable Materials Program, Department of Forest, Rangeland and Fire Sciences, University of Idaho, Moscow, ID 83844-1132, USA
| | - Erik R Coats
- Department of Civil Engineering, University of Idaho, Moscow, ID 83844-1022, USA
| | - Armando G McDonald
- Renewable Materials Program, Department of Forest, Rangeland and Fire Sciences, University of Idaho, Moscow, ID 83844-1132, USA.
| |
Collapse
|
69
|
Insights into the nucleation role of cellulose crystals during crystallization of poly( β -hydroxybutyrate). Carbohydr Polym 2015; 134:508-15. [DOI: 10.1016/j.carbpol.2015.08.023] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Revised: 08/06/2015] [Accepted: 08/11/2015] [Indexed: 11/23/2022]
|
70
|
Liang S, McDonald AG. Anaerobic digestion of pre-fermented potato peel wastes for methane production. WASTE MANAGEMENT (NEW YORK, N.Y.) 2015; 46:197-200. [PMID: 26421481 DOI: 10.1016/j.wasman.2015.09.029] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2015] [Revised: 09/19/2015] [Accepted: 09/21/2015] [Indexed: 05/11/2023]
Abstract
This study investigated the feasibility of anaerobic digestion (AD) of potato peel waste (PPW) and its lactic acid fermentation residue (PPW-FR) for methane (CH4) production. The experimental results showed that about 60-70% CH4 content was obtained. The digester using PPW-FR as feedstock exhibited better performance and produced a highest cumulative CH4 production of 273 L/kg VS fed, followed by 239 L/kg VS fed using PPW under the same conditions. However, with increasing solid loadings of PPW-FR feedstock from 6.4% to 9.1%, the CH4 production was inhibited. The generation, accumulation, and degradation of volatile fatty acids (VFAs) in digesters were also investigated in this research.
Collapse
Affiliation(s)
- Shaobo Liang
- Renewable Materials Program, Department of Forest, Rangeland and Fire Sciences, University of Idaho, 875 Perimeter Drive MS1132, Moscow, ID 83844, United States
| | - Armando G McDonald
- Renewable Materials Program, Department of Forest, Rangeland and Fire Sciences, University of Idaho, 875 Perimeter Drive MS1132, Moscow, ID 83844, United States.
| |
Collapse
|
71
|
Wei L, McDonald AG. Thermophysical properties of bacterial poly(3-hydroxybutyrate): Characterized by TMA, DSC, and TMDSC. J Appl Polym Sci 2015. [DOI: 10.1002/app.42412] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Liqing Wei
- Renewable Materials Program, Department of Forest, Rangeland and Fire Sciences; University of Idaho; Moscow Idaho 83844-1132
| | - Armando G. McDonald
- Renewable Materials Program, Department of Forest, Rangeland and Fire Sciences; University of Idaho; Moscow Idaho 83844-1132
| |
Collapse
|