Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Classification and Mechanical Properties of Synthetic Polymers01:28

Classification and Mechanical Properties of Synthetic Polymers

Synthetic polymers are classified as elastomers, fibers, or plastics based on their crystallinity. Crystallinity, the degree of long-range order in the solid state, influences the mechanical properties (stretching or contracting) of elastomers. Elastomers are flexible polymers that can expand or contract easily upon the application of an external force. They have numerous crosslinks that pull them back into their original shape when stress is removed. Silicones, for instance, are highly elastic...
Polymer Classification: Architecture01:14

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...
Types of Step-Growth Polymers: Polyesters01:20

Types of Step-Growth Polymers: Polyesters

The introduction of polyesters has brought major development to the textile industry. The wrinkle-free behavior of polyester blends has eliminated the need for starching and ironing clothes.
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the polymer...
Polymer Classification: Crystallinity01:21

Polymer Classification: Crystallinity

Unlike ionic or small covalent molecules, polymers do not form crystalline solids due to the diffusion limitations of their long-chain structures. However, polymers contain microscopic crystalline domains separated by amorphous domains.
Crystalline domains are the regions where polymer chains are aligned in an orderly manner and held together in proximity by intermolecular forces. For example, chains in the crystalline domains of polyethylene and nylon are bound together by van der Waals...
Polymer Classification: Stereospecificity01:26

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...
Members Made of Elastoplastic Material01:19

Members Made of Elastoplastic Material

The behavior of elastoplastic materials under bending stresses, particularly in structural members with rectangular cross-sections, is crucial for predicting material responses and understanding failure modes. Initially, when a bending moment is applied, the stress distribution across the section follows Hooke's Law and is linear and elastic. This distribution means the stress increases from the neutral axis to the maximum at the outer fibers, up to the elastic limit.
As the bending moment...

You might also read

Related Articles

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

Sort by
Same author

Hydrodynamic evaluation of a spider-inspired underwater robot using distributed flapping fin propulsion.

Scientific reports·2026
Same author

Occupational air pollutant exposure and seasonal variation in respiratory outcomes among brick kiln workers.

International archives of occupational and environmental health·2026
Same author

Correction: Estimation of sexual dimorphism of adult human mandibles of South Indian origin using non-metric parameters and machine learning classification algorithms.

Scientific reports·2026
Same author

Modular 4WD agricultural robot for cutting, collection, and precision seeding: design and simulation-based evaluation.

Scientific reports·2026
Same author

Optimizing Fuel-Based Environmental Strategies for Stack Emissions From Zigzag and Fixed Chimney Bull's Trench Kiln (FCBTK) Brick Kilns: A Comparative Analysis.

International journal of analytical chemistry·2026
Same author

Combustion analysis of CI engine fuelled with calophyllum inophyllum methyl ester biodiesel and CeO<sub>2</sub> nanoparticle additives.

Scientific reports·2025
Same journal

Adaptive and intelligent scaffolds: Transforming tissue engineering through material and structural innovations.

Colloids and surfaces. B, Biointerfaces·2026
Same journal

Safeguarding nanovesicles and their payload: A framework for stable storage.

Colloids and surfaces. B, Biointerfaces·2026
Same journal

Drug-loaded nanomicelles with ROS-responsive controlled release of carnosic acid for the treatment of ulcerative colitis.

Colloids and surfaces. B, Biointerfaces·2026
Same journal

Manganese‑containing mesoporous bioactive glass with antioxidative and osteogenic activities for periodontitis treatment.

Colloids and surfaces. B, Biointerfaces·2026
Same journal

Biomimetic PRMT1 inhibitor-loaded manganese-containing bimetallic MOF enhances NSCLC immunotherapy via cGAS-STING activation and PD-L1 blockade.

Colloids and surfaces. B, Biointerfaces·2026
Same journal

Interfacial engineering in lipase-catalyzed synthesis of functional lipids: Mechanisms, strategies, and prospects.

Colloids and surfaces. B, Biointerfaces·2026
See all related articles

Related Experiment Video

Updated: Jun 23, 2026

Synthesis of Programmable Main-chain Liquid-crystalline Elastomers Using a Two-stage Thiol-acrylate Reaction
11:17

Synthesis of Programmable Main-chain Liquid-crystalline Elastomers Using a Two-stage Thiol-acrylate Reaction

Published on: January 19, 2016

Surface characteristics of chitin-based shape memory polyurethane elastomers.

Khalid Mahmood Zia1, Mohammad Zuber, Mehdi Barikani

  • 1Department of Chemistry, University of Agriculture, Faisalabad 38040, Pakistan.

Colloids and Surfaces. B, Biointerfaces
|May 12, 2009
PubMed
Summary
This summary is machine-generated.

Researchers synthesized shape memory polyurethanes (SMPUs) incorporating chitin and dimethylol propionic acid (DMPA). Varying chitin and DMPA content significantly altered the surface properties, including hydrophilicity and hydrophobicity, influencing solvent interactions.

More Related Videos

Fabrication of a Bioactive, PCL-based "Self-fitting" Shape Memory Polymer Scaffold
09:37

Fabrication of a Bioactive, PCL-based "Self-fitting" Shape Memory Polymer Scaffold

Published on: October 23, 2015

Synthesis of Soft Polysiloxane-urea Elastomers for Intraocular Lens Application
11:49

Synthesis of Soft Polysiloxane-urea Elastomers for Intraocular Lens Application

Published on: March 8, 2019

Related Experiment Videos

Last Updated: Jun 23, 2026

Synthesis of Programmable Main-chain Liquid-crystalline Elastomers Using a Two-stage Thiol-acrylate Reaction
11:17

Synthesis of Programmable Main-chain Liquid-crystalline Elastomers Using a Two-stage Thiol-acrylate Reaction

Published on: January 19, 2016

Fabrication of a Bioactive, PCL-based "Self-fitting" Shape Memory Polymer Scaffold
09:37

Fabrication of a Bioactive, PCL-based "Self-fitting" Shape Memory Polymer Scaffold

Published on: October 23, 2015

Synthesis of Soft Polysiloxane-urea Elastomers for Intraocular Lens Application
11:49

Synthesis of Soft Polysiloxane-urea Elastomers for Intraocular Lens Application

Published on: March 8, 2019

Area of Science:

  • Polymer Science
  • Materials Science
  • Surface Chemistry

Background:

  • Shape memory polyurethanes (SMPUs) are advanced materials with tunable properties.
  • Controlling surface characteristics is crucial for diverse applications.
  • Incorporating additives like chitin and dimethylol propionic acid (DMPA) can modify polyurethane behavior.

Purpose of the Study:

  • To synthesize novel shape memory polyurethanes (SMPUs).
  • To investigate the impact of chitin and DMPA on the surface properties of SMPUs.
  • To understand how these additives influence material-solvent interactions.

Main Methods:

  • Synthesis of SMPUs using polycaprolactone diol 4000 (PCL 4000), 1,4-butanediol (BDO), chitin, dimethylol propionic acid (DMPA), triethylamine (TEA), and 4,4'-diphenylmethane diisocyanate (MDI).
  • Structural verification using infrared spectroscopy.
  • Characterization of surface properties including contact angle, water absorption, surface free energy, work of water adhesion, and swelling behavior.

Main Results:

  • Successful synthesis and structural confirmation of SMPUs.
  • Dimethylol propionic acid (DMPA) increased the hydrophilicity of the polyurethanes.
  • Chitin's crystalline structure enhanced the hydrophobicity of the synthesized materials.
  • Surface properties were demonstrably affected by varying DMPA and chitin content.
  • Polyurethane film interactions with solvents correlated with DMPA and chitin concentrations.

Conclusions:

  • Chitin and DMPA are effective additives for tailoring the surface properties of SMPUs.
  • The balance of chitin and DMPA content allows for control over hydrophilicity and hydrophobicity.
  • These findings provide insights into designing SMPUs with specific surface characteristics for targeted applications.