Biomacromolecules and Bio‐Related Macromolecules

Kobayashi, Shiro; Uyama, Hiroshi

doi:10.1002/macp.200290084

Cited by 27 publications

(15 citation statements)

References 249 publications

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“…1 Because of its biocompatibility, biodegradability, antimicrobial activity and non-toxicity, 2 chitosan has been extensively investigated for several decades for uses in biomaterial, 3 wastewater treatment, 4 cosmetics, 5 food packaging, textiles, and other areas. However, its properties, such as thermal stability, mechanical properties, and gas barrier properties are frequently not sufficient to meet the requirements of this wide range of applications.…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of films based on zirconium sulfophenyl phosphonate and chitosan

Yang

Liu

et al. 2010

Carbohydrate Research

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Section: Introductionmentioning

confidence: 99%

Preparation and characterization of films based on zirconium sulfophenyl phosphonate and chitosan

Yang

Liu

et al. 2010

Carbohydrate Research

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“…Utilizing cellulose to spin fibers has a long history in the evolution of humankind 1. However, the current synthesis route for preparing cellulose rayon is based on the viscose and cuprammonium method, which still occupy a sole and exclusive position, although these processes are accompanied by production of environmentally hazardous byproducts (CS 2 , H 2 S and heavy metals) from their spinning systems.…”

Section: Introductionmentioning

confidence: 99%

Structure and Properties of Novel Fibers Spun from Cellulose in NaOH/Thiourea Aqueous Solution

Ruan

Zhang

Zhou

et al. 2004

Macromolecular Bioscience

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Cellulose was dissolved rapidly in a NaOH/thiourea aqueous solution (9.5:4.5 in wt.-%) to prepare a transparent cellulose solution, which was employed, for the first time, to spin a new class of regenerated cellulose fibers by wet spinning. The structure and mechanical properties of the resulting cellulose fibers were characterized, and compared with those of commercially available viscose rayon, cuprammonium rayon and Lyocell fibers. The results from wide angle X-ray diffraction and CP/MAS 13C NMR indicated that the novel cellulose fibers have a structure typical for a family II cellulose and possessed relatively high degrees of crystallinity. Scanning electron microscopy (SEM) and optical microscopy images revealed that the cross-section of the fibers is circular, similar to natural silk. The new fibers have higher molecular weights and better mechanical properties than those of viscose rayon. This low-cost technology is simple, different from the polluting viscose process. The dissolution and regeneration of the cellulose in the NaOH/thiourea aqueous solutions were a physical process and a sol-gel transition rather than a chemical reaction, leading to the smoothness and luster of the fibers. This work provides a potential application in the field of functional fiber manufacturing.

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“…To obtain high‐value polymers, studies on applying molecular and process design principles to polymers and monomers obtained naturally or from renewable resources are increasing. Various novel materials are being developed to take the place of petrochemical derivatives . Table shows a few of the modifications to some natural‐based monomers and their polymers.…”

Section: Promising Approachesmentioning

confidence: 99%

“…Various novel materials are being developed to take the place of petrochemical derivatives. [111][112][113][114][115][116][117] Table 1 shows a few of the modifications to some natural-based monomers and their polymers.…”

Section: Natural-based Monomers For Commodity Plasticsmentioning

confidence: 99%

Current approaches to waste polymer utilization and minimization: a review

Okan

Aydın

Barsbay

2018

J of Chemical Tech & Biotech

203

102

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The mass production of polymer products, in particular plastics, and their widespread use depending on the inherent advantages they have, make these materials ironically a threat to life on Earth. Polymer recycling is being considered as one of the most widely accepted remedies to the threat of growing amounts of plastic waste by both the public and scientists. In practice, recycling is associated with many difficulties, such as problems related to separation, sorting and cleaning operations, lack of fiscal subsidies, instability of selective garbage separation programs, high transport and electricity costs, etc. Still, a large section of society and the authorities agree on the necessity and importance of recycling to protect the environment, and natural habitats and resources for future generations in a balanced manner to conserve raw materials, and to reduce energy consumption, municipal solid waste production and greenhouse gas emission. The recycling effort is almost endless in itself and includes a variety of approaches such as refurbishing, mechanically reshaping, chemically treating, thermally utilizing, etc. Some novel approaches such as application in carbon capture or synthesis of carbon nanostructures from the plastic waste are among the new process technologies of recycling. From traditional and promising polymer waste utilization approaches, this review will highlight sustainable methods to reduce impacts of plastic waste on the environment. © 2018 Society of Chemical Industry

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Biomacromolecules and Bio‐Related Macromolecules

Cited by 27 publications

References 249 publications

Preparation and characterization of films based on zirconium sulfophenyl phosphonate and chitosan

Preparation and characterization of films based on zirconium sulfophenyl phosphonate and chitosan

Structure and Properties of Novel Fibers Spun from Cellulose in NaOH/Thiourea Aqueous Solution

Current approaches to waste polymer utilization and minimization: a review

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