Related Experiment Video

Updated: Jul 31, 2026

Synthesis and Mass Spectrometry Analysis of Oligo-peptoids
11:44

Synthesis and Mass Spectrometry Analysis of Oligo-peptoids

Published on: February 21, 2018

NMR-analysis of monomers in restorative resins

E Asmussen

    Acta Odontologica Scandinavica
    |January 1, 1975
    PubMed

    More Related Videos

    Quasistatic Mechanical Testing for Computer-Aided Design and Manufacturing Occlusal Veneers Cemented to Milled Dentin Analog Material07:42

    Quasistatic Mechanical Testing for Computer-Aided Design and Manufacturing Occlusal Veneers Cemented to Milled Dentin Analog Material

    Published on: December 20, 2024

    Evaluating the Effects of Different Polishing Methods on Color Stability of Dental Restorations in Pediatric Dentistry03:37

    Evaluating the Effects of Different Polishing Methods on Color Stability of Dental Restorations in Pediatric Dentistry

    Published on: June 6, 2025

    Related Concept Videos

    ¹H NMR: Complex Splitting01:13

    ¹H NMR: Complex Splitting

    A proton M that is coupled to a proton X results in doublet signals for M. However, NMR-active nuclei can be simultaneously coupled to more than one nonequivalent nucleus. When M is coupled to a second proton A, such as in styrene oxide, each peak in the doublet is split into another doublet.
    Splitting diagrams or splitting tree diagrams are routinely used to depict such complex couplings. While drawing splitting diagrams, the splitting with the larger coupling constant is usually applied first.
    ¹H NMR of Conformationally Flexible Molecules: Temporal Resolution00:52

    ¹H NMR of Conformationally Flexible Molecules: Temporal Resolution

    At room temperature, the chair conformer of cyclohexane undergoes rapid ring flipping between two equivalent chair conformers at a rate of approximately 105 times per second. These two chair conformers are in equilibrium. The rapid ring flipping results in the interconversion of the axial proton to an equatorial proton and an equatorial to the axial proton. Such interconversions are too rapid and cannot be detected on the NMR timescale. Hence, the NMR spectrometer cannot distinguish between the...
    Determination of Molar Masses of Polymers I01:24

    Determination of Molar Masses of Polymers I

    Polymerization produces macromolecules with a range of chain lengths due to the random nature of molecular growth processes. As chains form and terminate at different stages, a single polymer sample contains molecules of varying sizes rather than a uniform structure. This variability is described using average molar masses and distribution-related parameters, which together provide a comprehensive understanding of polymer characteristics.The distribution of molar masses plays a critical role in...
    Determination of Molar Masses of Polymers II01:27

    Determination of Molar Masses of Polymers II

    Polymer samples typically consist of macromolecular chains with a distribution of lengths, resulting in a range of molar masses rather than a single discrete value. Conventional descriptors such as the number-average molar mass and weight-average molar mass quantify this distribution but do not fully capture polymer behavior in solution..The viscosity-average molar mass provides a more realistic description of polymer behavior in solution because it accounts for the enhanced contribution of...