Nanocellulose hydrogels formed via crystalline transformation from cellulose I to II and subsequent freeze cross-linking reaction

Sekine, Yurina; Nankawa, Takuya; Hiroi, Kosuke; Oba, Yojiro*; Nagakawa, Yoshiyasu*; Sugita, Tsuyoshi; Shibayama, Yuki; Ikeda-Fukazawa, Tomoko*

Carbohydrate Polymers, 327, p.121538_1 - 121538_11, 2024/03

https://doi.org/10.1016/j.carbpol.2023.121538

We describe non-toxic, tough nanocellulose (NC) hydrogels formed from chemically unmodified NC by cellulose crystalline transformation and subsequent freeze cross-linking reaction. Using low-concentration NaOH and freezing together induced the crystalline transformation of NC from cellulose I to II via freeze concentration. After the crystalline transformation, cross-linking between the NC and CA in the freeze concentration layer (FCL) provided a strong NC network structure, forming NC hydrogels with high mechanical strength. The freeze-cross-linked NC hydrogel easily retained powder adsorbents in its inner space by mixing the NC-NaOH sol and the powder, and the hydrogel showed high removal efficiency for heavy metals. The results highlight the versatility of chemically unmodified celluloses in developing functional materials, suggest possible practical applications.

Heterogeneous aggregation of humic acids studied by small-angle neutron and X-ray scattering

Saito, Takumi*; Motokawa, Ryuhei; Okubo, Takahiro*; Miura, Daisuke*; Kumada, Takayuki

Environmental Science & Technology, 57(26), p.9802 - 9810, 2023/07

https://doi.org/10.1021/acs.est.3c02028

None

; ; *; Obata, Shinichi; Seki, Masayuki; ;

PNC TN8410 97-045, 21 Pages, 1997/03

PNC-TN8410-97-045.pdf:4.72MB

None

Decommissioning program for JAERI's reprocessing test facility

; Miyajima, Kazutoshi

Dekomisshoningu Giho, (12), p.49 - 58, 1995/07

http://www.randec.or.jp/publish/documents/gihou/Decommissioning%20gihou_12.pdf

no abstracts in English

Small-angle neutron scattering from lysozyme crystallization process

Niimura, Nobuo*; *; Minezaki, Yoshiaki; *

Physica B; Condensed Matter, 213-214, p.745 - 747, 1995/00

https://doi.org/10.1016/0921-4526(95)00267-D

no abstracts in English

None

Numata, Koji; ; Nemoto, Takeshi;

PNC TN8430 93-001, 37 Pages, 1993/04

PNC-TN8430-93-001.pdf:0.34MB

None

None

Numata, Koji; ; Nemoto, Takeshi; ; *; *; Hanawa, Eiji*

PNC TN8410 93-100, 46 Pages, 1993/04

PNC-TN8410-93-100.pdf:0.88MB

None

Effect of endothelin on platelets

*; *; Shibabe, Sadami; *

Nihon Kessen Shiketsu Gakkai-Shi, 2(4), p.318 - 322, 1991/08

https://doi.org/10.2491/jjsth.2.318

no abstracts in English

Changes in raw starch digestibility by irradiation

;

Shokuhin Shosha, 20(1), p.9 - 12, 1985/00

no abstracts in English

Irradiotion effect chitosan in dilute solution

; Takehisa, Masaaki

Shokuhin Shosha, 19, p.22 - 26, 1984/00

no abstracts in English