Scientists at Sigma-Aldrich® routinely determine number-average molecular weight (Mn) by 1H NMR end-group analysis for polymers having Mn values under 3,000.

Water-Soluble Photoinitiators

The introduction of LAP and water-dispersible photoinitiator nanoparticles of TPO, enables the development of novel formulations for 3D bioprinting, tissue engineering applications, and device manufacturing.

Polymer-Clay Nanocomposites: Design and Application of Multi-Functional Materials

One of the desirable end-goals of materials science research is the development of multi-functional materials. These materials are defined as compositions that bring more than one property enhancement to a particular application, thus allowing the material to replace more than

Nano Minerals: Nanoclays

Nanoclays are nanoparticles of layered mineral silicates. Montmorillonite, bentonite, and halloysite nanoclays and organoclays are used in polymer-clay nanocomposites, as rheology modifiers, and drug delivery carriers.

Fluorinated Hyperbranched Polymers

Fluorocarbon polymers, like small-molecule fluorocarbons, exhibit increased thermal stability, hydrophobicity, lipophobicity, improved chemical resistance, and decreased intermolecular attractive forces in comparison to their hydrocarbon analogs.

Segmented Copolymers of p-dioxanone, Glycolide, and Lactide: Advantages and Applications in Biomedical

Main features of p-dioxanone, glycolide and lactide based copolymers

MALDI-TOF Characterization of Functionalized Polymers

MALDI-TOF MS is a tool for confirming end group identity & transformations, verifying successful & complete conjugation. Functionalized polymers enable a quick & efficient route for synthesis of various polymer conjugates for many applications if apt end group is present.

Innovative Materials for Glass Ionomer Cements (GICs): Dental Applications

Innovation in dental restorative materials is driven by the need for biocompatible and natural-appearing restoration alternatives. Conventional dental materials like amalgam and composite resins have inherent disadvantages.

Nanoclays in Multi-Functional Composites

Nanoclays are clay minerals optimized for use in clay nanocomposites– multi-functional material systems with several property enhancements targeted for a particular application.

Universal (Switchable) RAFT Agents for Well-Defined Block Copolymers

Universal (Switchable) RAFT agents allow for the polymerization of both less activated and more activated monomers and are ideal for the synthesis of well-defined block copolymers.

The Progress in Development of Dental Restorative Materials

With dentists placing nearly 100 million dental fillings into patients′ teeth annually in the U.S. alone, polymeric composite restoratives account for a very large share of the biomaterials market.

Hexafluoroalcohol-functionalized Methacrylate Monomers for Lithographic/nanopatterning materials

To keep pace with Moore′s Law, there is a continuing need in the semiconductor industry to achieve higher circuit density in microelectronic devices.

Mesoporous Materials Synthesis

Mesoporous materials are formed by a self-assembly process from combined solutions of sol-gel precursors (e.g., metal alkoxides) and structure-directing amphiphiles, usually block-copolymers or surfactants.

Poly(N-isopropylacrylamide)-based Smart Surfaces for Cell Sheet Tissue Engineering

Tissue engineering has become a key therapeutic tool in the treatment of damaged or diseased organs and tissues, such as blood vessels and urinary bladders.

Thermal Transitions of Homopolymers: Glass Transition & Melting Point

Literature values for the glass transition temperature, (Tg), and melting temperature, (Tm), are given for the more common homopolymers.

Introduction of Terminal Azide and Alkyne Functionalities in Polymers

Click chemistry, and the copper(I)-catalyzed azide-alkyne cycloaddition (CuAAC) in particular, is a powerful new synthetic tool in polymer chemistry and material science.

Protein- and Peptide- Polymer Conjugates by RAFT Polymerization

The modification of biomacromolecules, such as peptides and proteins, through the attachment of synthetic polymers has led to a new family of highly advanced biomaterials with enhanced properties.

Versatile Cell Culture Scaffolds via Bio-orthogonal Click Reactions

Devising biomaterial scaffolds that are capable of recapitulating critical aspects of the complex extracellular nature of living tissues in a threedimensional (3D) fashion is a challenging requirement in the field of tissue engineering and regenerative medicine.

High-Purity Monomers & Polymers for Ophthalmic Applications

We offer a continuously expanding selection of high-purity monomers and polymers for ophthalmic applications, along with a full range of initiators, crosslinkers, dyes, and solvents.

Initiator/Stabilizer FAQs

An article regarding common FAQs for initiators and stabilizers.

Functional RAFT Polymers for Biomedical Applications

Reversible addition–fragmentation chain transfer (RAFT) polymerization is rapidly moving to the forefront in construction of drug and gene delivery vehicles.

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