Optimized Synthesis According to One-Step Process of a Biobased Thermoplastic Polyacetal Derived from Isosorbide

Nadia Hammami (1, 2) , Nathalie Jarroux (3) , Mike Robitzer (1) , Mustapha Majdoub (2) , Jean-Pierre Habas (1)

1 ICGM - Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier
2 LIMA - Laboratoire des Interfaces et Matériaux Avancés [Monastir]
3 LAMBE - Laboratoire Analyse et Modélisation pour la Biologie et l'Environnement

This paper describes both the synthesis and characterization of a biobased and non-aromatic polyacetal produced from the reaction between isosorbide and methylene chloride. The reaction was conducted in an aprotic dipolar and harmless solvent using a one-step, fast and economical procedure. The chemical composition of this polymer was investigated using Nuclear Magnetic Resonance and Fourier Transform Infra-Red spectroscopies. The molecular weights were examined by size exclusion chromatography and MALDI-TOF spectrometry. The synthesis conditions (concentration, mixing speed, solvent nature, stoichiometry, addition mode of one reactan) were found to strongly influence both polymer architecture and reaction yield. Under moderated stirring conditions, the polyacetal was characterized by a larger amount of macro-cycles. Inversely, under higher intensity mixing and with an excess of methylene chloride, it was mainly composed of linear chains. In this latter case, the polymeric material presented an amorphous morphology with a glass transition temperature (Tg) close to 55 °C. Its degradation temperature was evaluated to be close to 215 °C using thermogravimetry according to multi-ramp methodology. The chemical approach and the physicochemical properties are valuable in comparison with that characteristic of other isosorbide-based polyacetals.

Mots clés: Degradation temperatures; Acetal resins; Polymers; Polymeric glass; Nuclear magnetic resonance spectroscopy; Mixing; Glass transition; Dichloromethane; Chromatography; Size exclusion chromatography; Fourier transform infra reds; Isosorbide; MALDI-TOF spectrometries; Synthesis optimization; Synthesis and characterizations; Physicochemical property; Biosourced polymers; Thermogravimetric analysis; Plastic products; isosorbide; biosourced polymer; polyacetal; synthesis optimization; physicochemical properties; spectroscopies; cyclic/linear architectures; Spectroscopy; Chlorine compounds

Domaines: Chimie-Physique [physics.chem-ph]; Sciences du Vivant [q-bio]

Nadia Hammami, Nathalie Jarroux, Mike Robitzer, Mustapha Majdoub, Jean-Pierre Habas. Optimized Synthesis According to One-Step Process of a Biobased Thermoplastic Polyacetal Derived from Isosorbide. Polymers, 2016, 8 (8), pp.294. ⟨10.3390/polym8080294⟩. ⟨hal-02065265⟩