NDLI: Morphological changes of sterically stabilized nanocrystalline cellulose after periodate oxidation

Content Provider	Springer Nature Link
Author	Chen, Dezhi Ven, Theo G. M.
Copyright Year	2016
Abstract	Periodate oxidation breaks the C2–C3 bond in the glucose repeat units of cellulose, forming two vicinal aldehyde groups. When the cellulose is partially oxidized, three products were generated after periodate oxidation: fibrous cellulose, sterically stabilized nanocrystalline cellulose (SNCC) and dialdehyde modified cellulose. Thus, by periodate oxidation alone, we can produce nanocellulose. SNCCs were produced after 26, 42 and 84 h periodate oxidation. Their morphologies were examined by transmission electron microscopy, which show that the three SNCCs have similar diameters (5–10 nm). In contrast, the average length of SNCC decreases with aldehyde content: from approximately 590 nm after 26 h of oxidation to 100 nm for an oxidation period of 84 h. It indicates that the morphology of SNCC can be well controlled by the degree of periodate oxidation, which depends on the amount of periodate and the reaction time. Equivalent spherical diameters of SNCCs were also examined by dynamic light scattering, and the results correspond closely to the ones observed by TEM. The viscosities of SNCCs were measured by an Ubbelohde viscometer and compared with theory. Because the length of SNCC particles gradually reduces while their diameters remain almost the same, we propose that periodate reacts preferentially with the amorphous region of cellulose. After most of the amorphous regions have reacted, the reaction proceeds at the boundary of amorphous and crystalline regions, creating a reaction front that advances towards the crystalline regions, thus continually shortening them. Dynamic light scattering experiments on SNCC suspensions when adding cosolvents into them proved that SNCCs were sterically stabilized in water.
Starting Page	1051
Ending Page	1059
Page Count	9
File Format	PDF
ISSN	09690239
Journal	Cellulose
Volume Number	23
Issue Number	2
e-ISSN	1572882X
Language	English
Publisher	Springer Netherlands
Publisher Date	2016-01-12
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Steric stability Nanocrystalline cellulose Periodate Morphology Bioorganic Chemistry Physical Chemistry Organic Chemistry Polymer Sciences
Content Type	Text
Resource Type	Article
Subject	Polymers and Plastics

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Preparation and characterization of sterically stabilized nanocrystalline cellulose obtained by periodate oxidation of cellulose fibers

Preparation of hairy cationic nanocrystalline cellulose

Highly charged nanocrystalline cellulose and dicarboxylated cellulose from periodate and chlorite oxidized cellulose fibers

Effects of periodate oxidation on cellulose polymorphs

Mechanical properties of films made from dialcohol cellulose prepared by homogeneous periodate oxidation

Grafting of model primary amine compounds to cellulose nanowhiskers through periodate oxidation

Oxidation and sulfonation of cellulosics

Surface peeling of cellulose nanocrystals resulting from periodate oxidation and reductive amination with water-soluble polymers

Amino-functionalized nanocrystalline cellulose as an adsorbent for anionic dyes

Morphological changes of sterically stabilized nanocrystalline cellulose after periodate oxidation

Similar Documents

Preparation and characterization of sterically stabilized nanocrystalline cellulose obtained by periodate oxidation of cellulose fibers

Preparation of hairy cationic nanocrystalline cellulose

Highly charged nanocrystalline cellulose and dicarboxylated cellulose from periodate and chlorite oxidized cellulose fibers

Effects of periodate oxidation on cellulose polymorphs

Mechanical properties of films made from dialcohol cellulose prepared by homogeneous periodate oxidation

Grafting of model primary amine compounds to cellulose nanowhiskers through periodate oxidation

Oxidation and sulfonation of cellulosics

Surface peeling of cellulose nanocrystals resulting from periodate oxidation and reductive amination with water-soluble polymers

Amino-functionalized nanocrystalline cellulose as an adsorbent for anionic dyes

Morphological changes of sterically stabilized nanocrystalline cellulose after periodate oxidation