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Related Concept Videos

Fabrication and Design of Wood-Based High-Performance Composites08:08

Fabrication and Design of Wood-Based High-Performance Composites

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Delignified densified wood represents a new promising lightweight, high-performance and bio-based material with great potential to partially substitute natural fiber reinforced- or glass fiber reinforced composites in the future. We here present two versatile fabrication routes and demonstrate the possibility to create complex composite...
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Synthesis Method for Cellulose Nanofiber Biotemplated Palladium Composite Aerogels11:27

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A synthesis method for cellulose nanofiber biotemplated palladium composite aerogels is presented.The resulting composite aerogel materials offer potential for catalysis, sensing, and hydrogen gas storage...
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Experimental Implementation of a New Composite Fabrication Method: Exposing Bare Fibers on the Composite Surface by the Soft Layer Method06:26

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A protocol to expose bare fibers on the composite surface by eliminating resin rich area is presented. The fibers are exposed during fabrication of the composites, not by the post surface treatment. The exposed carbon composites exhibit high electrical conductivity in the through-thickness direction and high mechanical...
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Manufacturing Of Robust Natural Fiber Preforms Utilizing Bacterial Cellulose as Binder10:47

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We present a novel method of manufacturing rigid and robust short natural fiber preforms using a papermaking process. Bacterial cellulose acts simultaneously as the binder for the loose fibers and provides rigidity to the fiber preforms. These preforms can be infused with a resin to produce truly green hierarchical...
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Histone Modification02:32

Histone Modification

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The histone proteins have a flexible N-terminal tail extending out from the nucleosome. These histone tails are often subjected to post-translational modifications such as acetylation, methylation, phosphorylation, and ubiquitination. Particular combinations of these modifications form “histone codes” that influence the chromatin folding and tissue-specific gene expression.
Acetylation
The enzyme histone acetyltransferase adds acetyl group to the histones. Another enzyme, histone...
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High Resolution Quantification of Crystalline Cellulose Accumulation in Arabidopsis Roots to Monitor Tissue-specific Cell Wall Modifications09:27

High Resolution Quantification of Crystalline Cellulose Accumulation in Arabidopsis Roots to Monitor Tissue-specific Cell Wall Modifications

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Crystalline cellulose is an important constituent of the plant cell wall. However, its quantification at a cellular resolution is technically challenging. Here, we report the use of polarized light technology and root cross sections to obtain information of cell wall composition at a spatiotemporal...
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Related Experiment Video

Updated: Jan 20, 2026

Fabrication and Design of Wood-Based High-Performance Composites
08:08

Fabrication and Design of Wood-Based High-Performance Composites

Published on: November 9, 2019

14.0K

PEG Surface Modification of Microcrystalline Cellulose@Nanotitanium Dioxide Core-Shell Composite to Improve Sunscreen

Huizhong Yu1, Junxian Xie1,2, Lan Yao2

  • 1School of Pulp & Paper Engineering, Hubei University of Technology, Wuhan 430068, China.

ACS Omega
|January 19, 2026
PubMed
Summary
This summary is machine-generated.

Polyethylene glycol (PEG) modification of microcrystalline cellulose@nano-TiO2 sunscreen composites significantly improves dispersibility and UV protection. PEG enhances UV scattering and prevents nano-TiO2 particle aggregation for safer cosmetic applications.

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Last Updated: Jan 20, 2026

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Experimental Implementation of a New Composite Fabrication Method: Exposing Bare Fibers on the Composite Surface by the Soft Layer Method
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Area of Science:

  • Materials Science
  • Nanotechnology
  • Cosmetic Science

Background:

  • Particle aggregation of microcrystalline cellulose@nano-TiO2 (MCC@nano-TiO2) hinders grinding and risks nano-TiO2 release.
  • Surface modification is crucial to prevent agglomeration and ensure safety in cosmetic applications.

Purpose of the Study:

  • To investigate the effects of polyethylene glycol (PEG) modification on the structure and properties of MCC@nano-TiO2 composites.
  • To enhance the dispersibility, UV protection, and stability of nano-TiO2-based sunscreens.

Main Methods:

  • Synthesized MCC@nano-TiO2 core-shell composites with varying PEG amounts.
  • Analyzed structural changes and UV protection capabilities before and after PEG modification.
  • Evaluated particle dispersibility, aggregation, and nano-TiO2 release.

Main Results:

  • A 6% PEG modification at a 60:40 MCC:nano-TiO2 ratio significantly improved dispersibility and UV protection.
  • PEG alteration of the nano-TiO2 shell structure enhanced UV reflection and scattering, extending UVA range (critical wavelength 376 nm).
  • PEG modification minimized particle agglomeration and potential nano-TiO2 release.

Conclusions:

  • PEG surface modification is effective in stabilizing MCC@nano-TiO2 composites for cosmetic use.
  • Optimized PEG treatment enhances sunscreen performance and safety by improving dispersibility and UV blocking.
  • This approach offers a pathway for the industrialization of core-shell nano-TiO2 materials.