Cellulose nanocrystals filled carboxymethyl cellulose composites Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/tt44pq51q

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • Hydrogel polymers are a novel class of hydrophilic materials that have large application areas in both the industrial and medical fields. Carboxymethyl cellulose (CMC) has received attention as a hydrogel polymer. Methods to modify the mechanical properties of gels and films made from CMC are of interest in our lab and in the commercial marketplace. Also, nanophase materials have attracted great interest in recent years and have the potential to provide novel properties to hydrogels. This project investigated cellulose nanocrystals (NCCs) as a filler in CMC and compared the effects to microcrystalline cellulose (MCC). The composite material was composed of CMC, MCC or NCC, with glycerin as a plasticizer. NCC and MCC concentration ranged from 5% to 30%. Glycerin concentrations were kept constant at 10%. NCCs improved the strength and stiffness of the resulting composite compared to MCC. Thermal degradation was also investigated using thermo gravimetric analysis and NCC was found to affect the degradation behavior. In addition, thermal crosslinking between CMC and NCC was studied. In these experiments, NCC concentrations were kept constant at 5% and thermal crosslinking was conducted at various temperatures ranging from 80°C to 120°C. Material properties and water resistance were measured. Crosslinking improved the strength and stiffness of the composite and also significantly improved the water resistance.
Resource Type
Date Available
Date Copyright
Date Issued
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Committee Member
Academic Affiliation
Non-Academic Affiliation
Subject
Rights Statement
Peer Reviewed
Language
Digitization Specifications
  • File scanned at 300 ppi (Monochrome) using Capture Perfect 3.0.82 on a Canon DR-9080C in PDF format. CVista PdfCompressor 4.0 was used for pdf compression and textual OCR.
Replaces
Additional Information
  • description.provenance : Submitted by Eric Vanderwall (ewscanner@gmail.com) on 2011-08-16T19:13:56Z No. of bitstreams: 1 ChoiYongJae2006.pdf: 5299543 bytes, checksum: 8a3f3bb4e3688973941dba76b2a66be5 (MD5)
  • description.provenance : Made available in DSpace on 2011-08-16T21:54:33Z (GMT). No. of bitstreams: 1 ChoiYongJae2006.pdf: 5299543 bytes, checksum: 8a3f3bb4e3688973941dba76b2a66be5 (MD5) Previous issue date: 2005-06-03
  • description.provenance : Approved for entry into archive by Anna Opoien(anna.opoien@oregonstate.edu) on 2011-08-16T19:39:04Z (GMT) No. of bitstreams: 1 ChoiYongJae2006.pdf: 5299543 bytes, checksum: 8a3f3bb4e3688973941dba76b2a66be5 (MD5)
  • description.provenance : Approved for entry into archive by Anna Opoien(anna.opoien@oregonstate.edu) on 2011-08-16T21:54:33Z (GMT) No. of bitstreams: 1 ChoiYongJae2006.pdf: 5299543 bytes, checksum: 8a3f3bb4e3688973941dba76b2a66be5 (MD5)

Relationships

In Administrative Set:
Last modified: 08/15/2017

Downloadable Content

Download PDF
Citations:

EndNote | Zotero | Mendeley

Items