Cellulose hydrogel-based biodegradable and recyclable magnetoelectric composites for electromechanical conversion
Sanming HuMinzhang ZhengQi WangLing LiJun XingKun ChenFuyu QiPengyu HeLin MaoZhijun ShiBin SuGuang Yang
10
Citation
50
Reference
10
Related Paper
Citation Trend
Keywords:
Textile
The cellulose-based hydrogel has occupied a pivotal position in almost all walks of life. However, the native cellulose can not be directly used for preparing hydrogel due to the complex non-covalent interactions. Some literature has discussed the dissolution and modification of cellulose but has yet to address the influence of the pretreatment on the as-prepared hydrogels. Firstly, the "touching" of cellulose by derived and non-derived solvents was introduced, namely, the dissolution of cellulose. Secondly, the "conversion" of functional groups on the cellulose surface by special routes, which is the modification of cellulose. The above-mentioned two parts were intended to explain the changes in physicochemical properties of cellulose by these routes and their influences on the subsequent hydrogel preparation. Finally, the "reinforcement" of cellulose-based hydrogels by physical and chemical techniques was summarized, viz., improving the mechanical properties of cellulose-based hydrogels and the changes in the multi-level structure of the interior of cellulose-based hydrogels.
Chemical modification
Regenerated cellulose
Cite
Citations (23)
Bacterial cellulose, synthesized by bacteria, is one of the most highly pure cellulose sources. It has gained a great attention due to its unique properties. With molecular similarity to cellulose derived from plants, bacterial cellulose can be modified based on diverse techniques established for the plant-derived cellulose. Modification of cellulose has become one of the major areas of cellulose research to provide cellulose-based materials with novel properties. The progress in cellulose science has also opened up more potentials for bacterial cellulose. This chapter describes an overview of biosyntheses, modifications, and applications of bacterial cellulose.
Bacterial Cellulose
Cite
Citations (7)
It was found that there was a difference between X-ray diffractograms of Na-Cellulose I derived from the cellulose I family (I and IIII) and that from the cellulose II family (II, IIIII and IVII), and we calssified them as Na-Cellulose II and Na-Cellulose III, respectively. Both Na-Cellulose II and III regenerated cellulose II by washing with cold water. When decomposed with hot water, however, Na-Cellulose II regenerated mixture of cellulose I and II, and Na-Cellulose III regenerated cellulose II. Namely, Na-Cellulose has memory of the crystalline structure of the original cellulose.As described in our previous paper, the chain conformation of cellulose is thought to be a difference between cellulose I and II families, the former has “bent” type and the latter has “bent and twisted” type comformation.The memory of the original structure may be due to the retaining of chain conformation during meroerization and regeneration. When Na-Cellulose II is decomposed by cold water, the chain conformation is changed from “bent” to more stable “bent and twisted” type owing to strong swelling and hydration, and cellulose II was regenerated.
Regenerated cellulose
Cite
Citations (4)
Cite
Citations (33)
This chapter contains sections titled: Introduction Pristine Cellulose as a Source of New Materials Novel Cellulose Solvents Cellulose-Based Composites and Superficial Fiber Modification Cellulose Coupled with Nanoparticles Electronic Applications Biomedical Applications Cellulose Derivatives Concluding Remarks References
Cellulose fiber
Cite
Citations (12)
This chapter contains sections titled: 4.4 Esterification of Cellulose 4.4.1 Esters of cellulose with inorganic acids 4.4.1.1 Cellulose nitrate 4.4.1.2 Cellulose nitrite 4.4.1.3 Cellulose sulfates 4.4.1.4 Cellulose phosphate and other phosphorus-containing cellulose derivatives 4.4.1.5 Cellulose borates 4.4.1.6 Desoxycelluloses
Surface Modification
Cite
Citations (2)
Abstract Cellulose esters are cellulose derivatives which result from the esterification of the free hydroxyl groups of cellulose with one or more acids. Cellulose nitrate is the oldest cellulose derivative and the only inorganic ester of commercial importance. Manufacturing and uses of sulfur‐ and phosphorus containing cellulose esters are discussed. An analysis of the oldest and most important inorganic ester of cellulose, cellulose nitrate, is presented.
Derivative (finance)
Cite
Citations (3)
Hemicellulose
Cite
Citations (73)
The phase transformation from cellulose I into cellulose II in woods by way of Na-cellulose I was examined by x-ray diffraction analysis. The formation of Na-cellulose I in woods increased with the increase of treating time in alkali solution. When compression wood was treated with 20% NaOH solution at room temperature for 1 day, the x-ray diagram showed only Na-cellulose I. On the other hand, the x-ray diagram of tension wood showed a mixture of cellulose I and Na-cellulose I. Cellulose I of tension wood could not be transformed completely into Na-cellulose I even after 10-day treatment, but was transformed into Na-cellulose I after 30-day treatment. Na-cellulose I of compression and tension woods was converted to the cellulose I pattern and the mixture of cellulose I and cellulose II, respectively, after washing with water and drying at 20. Cellulose I regenerated from Na-cellulose I in wood could not be converted to cellulose II by delignification. Thus, it revealed that the delignification of the alkali-treated wood did not affect their cellulose structures. From the results, therefore, it can be concluded that lignin in woods prevents the formation of the stable Na-cellulose I and the conversion from cellulose I to cellulose II. This means that the conversion of chain polarity of wood cellulose hardly occurs during mercerization because cellulose microfibrils are fixed by lignin which not to be intermingled.
Cite
Citations (0)