Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Polymer Classification: Architecture

Polymer Classification: Architecture

Polymers are classified as linear or branched on the basis of their chain architecture. The polymer chains in linear polymers have a long chain-like structure with minimal to no branching at all. Even if a polymer features large substituent groups on the monomer, which appear as branches to the skeleton, it is not considered a branched polymer. A branched polymer contains secondary polymer chains that arise from the main polymer chain. The branching occurs when the polymer growth shifts from...

Surface Active Agents

Surface Active Agents

Surfactants, named for their behavior at interfaces, positively adsorb at the interfaces of two phases, reducing interfacial tension. Their versatility as emulsifiers, detergents, and foaming agents stems from this ability. Surfactants, often termed amphiphiles, share the property of amphipathy, with molecules having both hydrophilic and hydrophobic portions. The hydrophilic part is called the head, and the hydrophobic part, including an elongated alkyl substituent, forms the tail.Surfactants...

Radical Chain-Growth Polymerization: Chain Branching

Radical Chain-Growth Polymerization: Chain Branching

The skeletal structure of polymers synthesized via radical polymerization is always branched. For example, the polymerization of ethylene by radical polymerization results in a low-density grade of polyethylene with a heavily branched skeletal structure. Here, the radical site abstracts hydrogen from the growing chain, and the radical site shifts from the end (a primary carbon center) to anywhere within the growing chain (a secondary carbon center). Consequently, the part of the chain from the...

Physical Properties of Alkanes

Physical Properties of Alkanes

Alkanes are nonpolar molecules due to the presence of only carbon and hydrogen atoms. The electronegativity difference between carbon and hydrogen is minimal, and hence alkanes have a zero dipole moment. This leads to the presence of only dispersion forces between the molecules. The strength of dispersion forces is dependent on the surface area of the molecules on which they act. Since the surface area increases with the molecular length for straight-chain alkanes, the dispersion forces also...

Micelles

Micelles

Micelle formation is an intricate process that hinges on the properties of amphiphilic or amphipathic molecules and the conditions of the system in which they are found. Amphiphilic molecules, which have both hydrophilic (water-attracting) and hydrophobic (water-repelling) parts, play a critical role in this process.In aqueous environments, these molecules arrange themselves such that their hydrophilic heads are turned towards the water phase, while their hydrophobic tails are oriented away...

Polymer Classification: Stereospecificity

Polymer Classification: Stereospecificity

Polymerization generates chiral centers along the entire backbone of a polymer chain. Accordingly, the stereochemistry of the substituent group has a significant effect on polymer properties. Polymers formed from monosubstituted alkene monomers feature chiral carbons at every alternate position in the polymer backbone. Relative to the predominant orientation of substituents at the adjacent chiral carbons, the polymer can exist in three different configurations: isotactic, syndiotactic, and...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Predicting non-surgical treatment failure in patients with spontaneous pneumothorax-the Base-C score: a retrospective study.

PeerJ·2026

Same author

CCL3 and IL-7 Synergistically Enhance CAR-T Efficacy in Solid Tumors.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026

Same author

Bioinspired heliconical auxetic biofibers for intelligent biomechanical surveillance.

Science advances·2026

Same author

A Biodegradable Gelatin-Based Hydrogel Polymer Electrolyte for Integrated Multimodal Physiological Signal Sensing and Long-Lifespan Rechargeable Zinc-Air Batteries.

Analytical chemistry·2026

Same author

An ABCG-type transporter endows fomesafen resistance in Amaranthus retroflexus L.

Plant physiology·2026

Same author

Bioinspired Auxetic Metastructures Enable Biomechanically Adaptive, Machine Learning-Enhanced Self-Powered Sensing with Ultrahigh Efficiency.

Nano-micro letters·2026

Search research articles

Related Experiment Video

Updated: Apr 25, 2026

Preparation of Hollow Polystyrene Particles and Microcapsules by Radical Polymerization of Janus Droplets Consisting of Hydrocarbon and Fluorocarbon Oils

Preparation of Hollow Polystyrene Particles and Microcapsules by Radical Polymerization of Janus Droplets Consisting of Hydrocarbon and Fluorocarbon Oils

Published on: January 25, 2018

Structural and Interfacial Properties of Hyperbranched-Linear Polymer Surfactant.

Taotao Qiang¹, Qiaoqiao Bu², Zhaofeng Huang²

¹Key Laboratory of Auxiliary Chemistry and Technology for Light Chemical Industry, Ministry of Education, Shaanxi University of Science and Technology, Xi'an, 710021 Shaanxi China ; Shaanxi Research Institute of Agricultural Products Processing Technology, Xi'an, 710021 Shaanxi China.

Journal of Surfactants and Detergents

|August 26, 2014

Summary

New hyperbranched-linear polymer surfactants (HLPS) were synthesized and modified with oleic acid. These novel HLPS effectively reduce water

Keywords:

Amphiphilic Hydroxyl-terminated hyperbranched polymer (HBP)Hyperbranched-linear polymer surfactants (HLPS)Interfacial property Structure

More Related Videos

Enhanced Oil Recovery using a Combination of Biosurfactants

Enhanced Oil Recovery using a Combination of Biosurfactants

Published on: June 3, 2022

Studying Surfactant Effects on Hydrate Crystallization at Oil-Water Interfaces Using a Low-Cost Integrated Modular Peltier Device

Studying Surfactant Effects on Hydrate Crystallization at Oil-Water Interfaces Using a Low-Cost Integrated Modular Peltier Device

Published on: March 18, 2020

Related Experiment Videos

Last Updated: Apr 25, 2026

Preparation of Hollow Polystyrene Particles and Microcapsules by Radical Polymerization of Janus Droplets Consisting of Hydrocarbon and Fluorocarbon Oils

Preparation of Hollow Polystyrene Particles and Microcapsules by Radical Polymerization of Janus Droplets Consisting of Hydrocarbon and Fluorocarbon Oils

Published on: January 25, 2018

Enhanced Oil Recovery using a Combination of Biosurfactants

Enhanced Oil Recovery using a Combination of Biosurfactants

Published on: June 3, 2022

Studying Surfactant Effects on Hydrate Crystallization at Oil-Water Interfaces Using a Low-Cost Integrated Modular Peltier Device

Studying Surfactant Effects on Hydrate Crystallization at Oil-Water Interfaces Using a Low-Cost Integrated Modular Peltier Device

Published on: March 18, 2020

Area of Science:

Polymer Chemistry
Surface Science

Background:

Hyperbranched polymers (HBPs) offer unique properties but require functionalization for specific applications.
Developing efficient polymer surfactants is crucial for various industrial processes.

Purpose of the Study:

To synthesize novel hyperbranched-linear polymer surfactants (HLPS) via oleic acid grafting.
To characterize the structure and properties of the synthesized HLPS.
To investigate the surface activity and self-assembly behavior of HLPS.

Main Methods:

Step synthesis of hydroxyl-terminated hyperbranched polymer (HBP) using trimethylolpropane and an AB2 monomer.
Michael addition reaction to obtain AB2 monomers from methyl acrylate and diethanolamine.
Fourier transform infrared spectroscopy (FTIR) and nuclear magnetic resonance (NMR) for structural characterization.
Surface tension and critical micelle concentration (CMC) measurements.
Dynamic light scattering (DLS) for morphology analysis.
Langmuir-Blodgett (LB) instrument for surface pressure-area-time measurements.
Interface simulation.

Main Results:

Successful synthesis and oleic acid modification of HBPs to form HLPS confirmed by FTIR and NMR.
HLPS significantly reduced the surface tension of water and exhibited varying critical micelle concentrations.
Dynamic light scattering revealed non-monotonic particle size behavior attributed to different linear portions.
Langmuir-Blodgett analysis indicated increased surface tension with increasing hydrophobic groups in the monolayer.
Interface conditions were successfully simulated for different HLPS variations.

Conclusions:

Oleic acid-modified hyperbranched-linear polymer surfactants demonstrate excellent surface activity.
The unique structure of HLPS influences their self-assembly and interfacial behavior.
These novel surfactants hold potential for applications requiring surface tension reduction and controlled interfacial properties.