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Amin KNM, Hosseinmardi A, Martin DJ, Annamalai PK. A mixed acid methodology to produce thermally stable cellulose nanocrystal at high yield using phosphoric acid. JOURNAL OF BIORESOURCES AND BIOPRODUCTS 2022. [DOI: 10.1016/j.jobab.2021.12.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Zou C, Si G, Chen C. A general strategy for heterogenizing olefin polymerization catalysts and the synthesis of polyolefins and composites. Nat Commun 2022; 13:1954. [PMID: 35414067 PMCID: PMC9005542 DOI: 10.1038/s41467-022-29533-9] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2021] [Accepted: 03/17/2022] [Indexed: 11/09/2022] Open
Abstract
The heterogenization of homogeneous metal complexes on solid supports presents an efficient strategy for bridging homogeneous catalysts with industrially-preferred heterogeneous catalysts; however, a series of drawbacks restrict their implementation in olefin polymerization, particularly for copolymerization with polar comonomers. In this contribution, we report an ionic anchoring strategy that is highly versatile, generally applicable to different systems, and enables strong catalyst-support interactions while tolerating various polar functional groups. In addition to greatly enhanced polymerization properties, the supported catalysts achieved higher comonomer incorporation than their unsupported counterparts. This strategy enabled efficient polymerization at high temperatures at large scale and great control over product morphology, and the facile synthesis of polyolefin composites. More importantly, the dispersion of different fillers in the polyolefin matrix produced great material properties even at low composite loadings. It is expected that this strategy will find applications in different catalytic systems and the synthesis of advanced engineering materials.
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Affiliation(s)
- Chen Zou
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, 230026, China
| | - Guifu Si
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, 230026, China
| | - Changle Chen
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, 230026, China.
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Song C, Zhang Z, Shi N, Mohammadnia M. Preparation and Characterization of p-Phenylenediamine Supported on Nanocellulose (PDA@CNC) as Novel Recyclable Nano Catalyst for Synthesis of Spiropyran Oxide Derivatives. Polycycl Aromat Compd 2021. [DOI: 10.1080/10406638.2021.1974895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Congcong Song
- College of Applied Chemistry, Food and Drug, Weifang Engineering Vocational College, Qingzhou, Shandong, China
| | - Zhaogui Zhang
- College of Applied Chemistry, Food and Drug, Weifang Engineering Vocational College, Qingzhou, Shandong, China
| | - Nana Shi
- College of Applied Chemistry, Food and Drug, Weifang Engineering Vocational College, Qingzhou, Shandong, China
| | - Majid Mohammadnia
- Young Researcher and Elite Club, Department of Chemistry, Bojnord Branch, Islamic Azad University, Bojnourd, Iran
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Clarkson CM, El Awad Azrak SM, Forti ES, Schueneman GT, Moon RJ, Youngblood JP. Recent Developments in Cellulose Nanomaterial Composites. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2000718. [PMID: 32696496 DOI: 10.1002/adma.202000718] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 02/26/2020] [Indexed: 06/11/2023]
Abstract
Cellulose nanomaterials (CNMs) are a class of materials that have recently garnered attention in fields as varied as structural materials, biomaterials, rheology modifiers, construction, paper enhancement, and others. As the principal structural reinforcement of biomass giving wood its mechanical properties, CNM is strong and stiff, but also nontoxic, biodegradable, and sustainable with a very large (Gton yr-1 ) source. Unfortunately, due to the relatively young nature of the field and inherent incompatibility of CNM with most man-made materials in use today, research has tended to be more basic-science oriented rather than commercially applicable, so there are few CNM-enabled products on the market today. Herein, efforts are presented for preparing and forming cellulose nanomaterial nanocomposites. The focus is on recent efforts attempting to mitigate common impediments to practical commercialization but is also placed in context with traditional efforts. The work is presented in terms of the progress made, and still to be made, on solving the most pressing challenges-getting properties that are competitive with currently used materials, removing organic solvent, solving the inherent incompatibility between CNM and polymers of interest, and incorporation into commonly used industrial processing techniques.
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Affiliation(s)
- Caitlyn M Clarkson
- School of Materials Engineering, Purdue University, 701 West Stadium Ave., ARMS, West Lafayette, IN, 47907-2045, USA
| | - Sami M El Awad Azrak
- School of Materials Engineering, Purdue University, 701 West Stadium Ave., ARMS, West Lafayette, IN, 47907-2045, USA
| | - Endrina S Forti
- School of Materials Engineering, Purdue University, 701 West Stadium Ave., ARMS, West Lafayette, IN, 47907-2045, USA
| | - Gregory T Schueneman
- Forest Products Laboratory, United States Forest Service, Madison, WI, 53726, USA
| | - Robert J Moon
- Forest Products Laboratory, United States Forest Service, Madison, WI, 53726, USA
| | - Jeffrey P Youngblood
- School of Materials Engineering, Purdue University, 701 West Stadium Ave., ARMS, West Lafayette, IN, 47907-2045, USA
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Liu D, Dong X, Liu H, Zhao Y, Qi M. Effect of pore orientation on shear viscoelasticity of cellulose nanocrystal/collagen hydrogels. J Appl Polym Sci 2021. [DOI: 10.1002/app.49856] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Donglei Liu
- School of Materials Science and Engineering Dalian University of Technology Dalian China
| | - Xufeng Dong
- School of Materials Science and Engineering Dalian University of Technology Dalian China
| | - Huiying Liu
- Department of Prosthodontics School of Stomatology, Dalian Medical University Dalian China
| | - Yiping Zhao
- Department of Radiology Second Affiliated Hospital of Dalian Medical University Dalian China
| | - Min Qi
- School of Materials Science and Engineering Dalian University of Technology Dalian China
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Cecílio DM, Fernandes A, Lourenço JP, McKenna TFL, Ribeiro MR. Innovative route for the preparation of high-performance polyolefin materials based on unique dendrimeric silica particles. Polym Chem 2021. [DOI: 10.1039/d1py00453k] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An innovative methodology for the preparation of high-performance polyolefin-based materials combining a unique dendrimeric silica carrier, a straightforward in situ supporting procedure and in situ ethylene polymerization technique was developed.
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Affiliation(s)
- Duarte M. Cecílio
- Centro de Química Estrutural and Departamento de Engenharia Química
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa
- Portugal
| | - Auguste Fernandes
- Centro de Química Estrutural and Departamento de Engenharia Química
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa
- Portugal
| | - João Paulo Lourenço
- Centro de Química Estrutural and Departamento de Engenharia Química
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa
- Portugal
| | | | - M. Rosário Ribeiro
- Centro de Química Estrutural and Departamento de Engenharia Química
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa
- Portugal
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Hendren KD, Hough SA, Knott K, Lu W, Deck PA, Foster EJ. Anchored metallocene linear low‐density polyethene cellulose nanocrystal composites. POLYM INT 2020. [DOI: 10.1002/pi.6146] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Keith D Hendren
- Department of Materials Science and Engineering Virginia Tech Blacksburg VA USA
| | - Sarita A Hough
- Department of Chemistry and Macromolecules Innovation Institute Virginia Tech Blacksburg VA USA
| | - Kenneth Knott
- Department of Chemistry and Macromolecules Innovation Institute Virginia Tech Blacksburg VA USA
| | - Wei Lu
- Tosoh Bioscience LLC King of Prussia PA USA
| | - Paul A Deck
- Department of Chemistry and Macromolecules Innovation Institute Virginia Tech Blacksburg VA USA
| | - E Johan Foster
- Department of Materials Science and Engineering Virginia Tech Blacksburg VA USA
- Chemical and Biological Engineering University of British Columbia Vancouver Canada
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