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Related Experiment Video

Updated: Jan 13, 2026

Solution Blow Spinning of Polymeric Nano-Composite Fibers for Personal Protective Equipment

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Published on: March 18, 2021

Waterborne Glass Fiber Sizing Agents: Soft-Hard Janus Particles.

Tianlin Liu¹, Hailing He², Fuxin Liang¹

¹Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.

ACS Applied Materials & Interfaces

|January 9, 2026

Summary

This summary is machine-generated.

Soft-hard Janus particles (JPs) enhance glass fiber (GF) reinforced polypropylene (PP) composites. This interface modification improves mechanical properties by increasing surface roughness and creating a gradient modulus interphase layer.

Keywords:

Janus particle composite glass fiber interface modification sizing agent

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Area of Science:

Materials Science
Polymer Science
Composite Materials

Background:

Interface modification is key to enhancing mechanical properties in glass fiber (GF) reinforced polypropylene (PP) composites.
Sizing agents play a crucial role in optimizing the interface between fibers and the polymer matrix.

Purpose of the Study:

To design and synthesize soft-hard Janus particles (JPs) for GF sizing agents.
To investigate the effects of JPs on the interfacial properties and mechanical performance of GF/PP composites.

Main Methods:

Janus particles (JPs) synthesized via polymerization-induced phase separation of seeded emulsion.
JPs incorporated into a waterborne GF sizing agent for interface modification.
Characterization of surface properties (roughness, surface energy) and interfacial layer (modulus, thickness).

Main Results:

JPs increased GF surface roughness (Ra) from 6.3 to 23.1 nm.
JPs reduced polar surface energy from 30.20 to 25.48 mJ/m².
A gradient modulus interphase layer (~244 nm) formed, dissipating fracture energy via microdeformation.

Conclusions:

JPs synergistically enhance interfacial adhesion, nanoscale roughness, and create a gradient modulus interphase.
This modification simultaneously strengthens and toughens GF/PP composites.
JPs show promise for advanced composite interfacial engineering.