Comparative Study on Different Modified Preparation Methods of Cellulose Nanocrystalline
Xinhui Wang1, Na Wang1, Baoming Xu1
1College of Marine Science and Biological Engineering, Qingdao University of Science & Technology, Qingdao 266042, China.
Polymers
|October 13, 2021
Summary
Two methods create hydrophobic modified cellulose nanocrystalline (MCNC). Esterification offers faster reactions and higher substitution, while graft polymerization yields amphiphilic MCNC effective at reducing water surface tension for green applications.
Area of Science:
- Materials Science
- Surface Chemistry
- Polymer Science
Background:
- Cellulose nanocrystalline (CNC) is a sustainable nanomaterial with potential applications.
- Modifying CNC's surface properties is crucial for tailored functionalities.
- Hydrophobic modifications enhance CNC's utility in various industrial processes.
Purpose of the Study:
- To compare two distinct modification routes for cellulose nanocrystalline (CNC).
- To evaluate the resulting modified cellulose nanocrystalline (MCNC) for hydrophobic properties.
- To assess the structural integrity and surface activity of MCNC produced via different methods.
Main Methods:
- Esterification reaction with fatty acids.
- Graft polymerization techniques.
- Characterization of MCNC structure and surface activity.
Main Results:
- Both modification methods yielded MCNC retaining nanoscale dimensions and crystal structure.
- Esterification provided a shorter reaction time and higher degree of substitution.
- Graft polymerization resulted in MCNC with high HLB value and amphiphilicity, effectively reducing water surface tension.
Conclusions:
- Modified cellulose nanocrystalline (MCNC) can be produced with enhanced hydrophobic properties.
- Esterification and graft polymerization are viable routes for MCNC modification.
- MCNC shows promise as a green, environmentally friendly surface-active substance.
