Influence of monofunctional reactants on the physical properties of dimer acid‐based polyamides

Çavuş, Selva; Gürkaynak, M. Ali

doi:10.1002/pat.694

Cited by 29 publications

(6 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to the manufacturer's specifications, Pripol 1009 contains more than 98.5 wt% of dicarboxylic acid. IR and NMR data are consistent with the cycloaliphatic structure generally accepted [1][2][3] and the empirical formula HOOCC 34 H x COOH, where x ranges between 62 and 66, depending on the number of residual unsaturations. Isomers and acyclic dimers may be also present.…”

Section: Starting Materialssupporting

confidence: 84%

Supramolecular Thermoplastic with 0.5 Pa·s Melt Viscosity

et al. 2014

View full text Add to dashboard Cite

Design of materials with polymer-like properties at service temperature but able to flow like simple liquids when heated remains one of the important challenges of supramolecular chemistry. Combining these antagonistic properties is highly desirable to provide durability, processability, and recyclability of materials. Here, we explore a new strategy based on polycondensation reactions to design supramolecular polymer materials with stress at break above 10 MPa and melt viscosity lower than 1 Pa·s. We report the synthesis and rheological and mechanical properties (uniaxial tensile tests) of supramolecular polymers based on a multiblock polyamide architecture. The flexibility of polycondensation reactions made it possible to control the molecular size distribution, the strength of hydrogen bonds, and the crystallization of middle and end groups and to achieve targeted properties.

show abstract

Section: Starting Materialssupporting

confidence: 84%

Supramolecular Thermoplastic with 0.5 Pa·s Melt Viscosity

et al. 2014

View full text Add to dashboard Cite

show abstract

“…Dimers of fatty acids, which are synthesized by cycloaddition of two unsaturated fatty acids (e.g., oleic acid and linoleic acid), have a cyclic moiety and two reactive functions per molecule and are thus interesting candidates for synthesis of thermoplastic polyamides via polycondensation . Such dimer‐based biopolyamides are less crystalline and more flexible than conventional polyamides and are thus used in printing inks, as varnishes and heat‐seal coatings .…”

Section: Biobased Polyamides Via Polycondensation Reactionsmentioning

confidence: 99%

Biobased Polyamides: Recent Advances in Basic and Applied Research

Winnacker

Rieger

2016

Macromol. Rapid Commun.

228

161

View full text Add to dashboard Cite

Polyamides represent a very important class of polymers for a wide range of applications. After establishing in the 1930s with Nylon and Perlon, their impact on many branches has been continuously growing. In the context of developing sustainable polymers from renewable resources, many polyamides have meanwhile been described, which are based on natural building blocks. In addition to their sustainability, these biobased starting materials can provide special structural features to the resulting polymers and their properties, e.g., side groups, functionalities, or stereoinformation. While some biopolyamides are known for decades and well established (e.g., PA-11, Rilsan), many other promising candidates have been described in fundamental research studies, which have high potential but whose capability-especially for large scale and/or high-performance materials-will have to be proved in the future. Other candidates are very interesting from a scientific point of view, but with less potential for a market establishment due to price and/or feasibility reasons. This article aims at collating the recent developments in the field of biopolyamides and elucidating their properties and potential for different applications.

show abstract

“…Interesting dimers originate from the dimerization between oleic and linoleic acids, well-known as Priplast® range commercialized by CRODA, were employed as comonomer for polyamide preparation. 451,452 The long alkyl pendant chain imparted by this dimer conferred flexibility and lowered crystallinity to the resulting material in comparison with conventional polyamides, making them good candidates for printing inks and varnishes. 453 Other C36-dimer fatty acids were synthesized by Meier and coworkers 454 via the thiol-ene coupling of methyl oleate with ethane-1,2-dithiol under UV irradiation using DMPA as initiator.…”

Section: Figure 75 Synthesis Of C13 Dimers From Erucic Acidmentioning

confidence: 99%

Bio-Sourced Polymers: Recent Advances

Cramail

Bizet

Lamarzelle

et al. 2020

Series on Chemistry, Energy and the Environment

View full text Add to dashboard Cite

Synthetic polymers are of major interest in the chemical industry, with a world production superior to 350Mt in 2016. They find applications in all the branches of industry, from packaging films to the stateof-the-art materials for sports and leisure activities, construction and aerospace industry or medical applications. Half of the amount of molecules produced by the petrochemical industry thus finds itself incorporated in the elaboration of polymer materials. With a production of 160Mt / year, ethylene can be considered as the major example of petroleum-based monomers. Green Chemistry introduced in 1998 by Anastase et al. (refer to Chapter 1 of this book), aims at providing solutions to reduce environmental impacts of our society. More precisely, this pursue of a more sustainable chemistry consists in using a source of renewable carbon to both reduce the dependence on fossil resources and thus stabilize greenhouse gas emissions (in particular CO 2 ) at the end of life. The use of renewable resources is of major interest in the elaboration of bio-sourced polymers. By using them, it is possible to mimick the fossil-based polymers -drop-in structures such as biopolyethylene-or to design new chemical structures, such as poly(lactic acid), PLA. Nowadays, the vegetal-based chemistry (renewable resources) mobilizes less than 0.5 % of arable land in the world. Some reminders of the definitions of the terms biomass, biopolymer, biodegradable polymer, bio-sourced polymer, bioplastic, biorefinery may be necessary: Biomass: material of biological origin (elaborated by alive bodies) with the exception of the materials of geological or fossil formation.Biopolymer: polymer developed by alive bodies, extracted from the biomass. Examples: polysaccharides, proteins, bacterial polymers.Biodegradable polymer: polymer the main degradation mechanism of which can be biotic, by enzymatic way. Under the action of micro-organisms and in the presence of oxygen (aerobic conditions), the organic compound decomposes totally within few months into carbon dioxide, water and mineral salts, with the appearance of a new biomass; in the absence of oxygen (anaerobic conditions), the organic compound decomposes totally within few months into carbon dioxide, methane, mineral salts and creation of a new biomass.Bio-sourced (or bio-based) polymer: synthetic polymer partially (generally > 20 %) or totally obtained from by-products stemming from the biomass. The bio-sourced character of a polymer can be determined in particular from its content in C14, according to the standard ASTM D6866. For the materials of totally fossil origin, the content in C14 is null.Bioplastic: term of popularization which indicates a 'biobased plastic' (restricted definition) and/or biodegradable (wider definition).Biorefinery: by analogy with a classic refinery, which works from fossil resources, a bio-refinery handles biomasses to produce, according to the cases, energy, fuels, materials, chemical and polymer products and/or animal and human feed. Today, two biopolymers ac...

show abstract

Influence of monofunctional reactants on the physical properties of dimer acid‐based polyamides

Cited by 29 publications

References 14 publications

Supramolecular Thermoplastic with 0.5 Pa·s Melt Viscosity

Supramolecular Thermoplastic with 0.5 Pa·s Melt Viscosity

Biobased Polyamides: Recent Advances in Basic and Applied Research

Bio-Sourced Polymers: Recent Advances

Contact Info

Product

Resources

About