Fully Isohexide-Based Polyesters: Synthesis, Characterization, and Structure–Properties Relations

Structural and thermal properties of poly(1,4-cyclohexane dimethylene terephthalate) containing isosorbide

Poly(1,4-cyclohexanedimethylene isosorbide terephthalate) (PICT) copolymers were synthesized by melt condensation with various contents of the corn derived monomer isosorbide (ISB).

A designed synthetic strategy toward poly(isosorbide terephthalate) copolymers: a combination of temporary modification, transesterification, cyclization and polycondensation

After a combination of temporary modification, transesterification, cyclization and polycondensation, a series of high-M_n and high-T_g poly(isosorbide terephthalate) copolymers were synthesized.

Synthesis of novel biobased polyimides derived from isomannide with good optical transparency, solubility and thermal stability

Novel biobased polyimides with good optical transparency and combined properties were synthesized from biomass isomannide-derived diamines and/or dianhydrides, thus providing a new approach to develop sustainable materials of high performance.

Synthesis and properties of polyesters derived from renewable eugenol and α,ω-diols via a continuous overheating method

Two series of thermoplastic polyesters derived from renewable eugenol and linear aliphatic α,ω-diols were prepared. The dependence of the properties on the α,ω-diol length was investigated.

A high-molecular-weight and high-Tg poly(ester carbonate) partially based on isosorbide: synthesis and structure–property relationships

A new family of high-molecular-weight and high T_g poly(ester carbonate)s partially based on renewable isosorbide were prepared by incorporating 1,4-butanediol and dimethyl terephthalate into poly(isosorbide carbonate).

Polyesters derived from bio-based eugenol and 10-undecenoic acid: synthesis, characterization, and structure–property relationships

A series of thermoplastic polyesters with versatile thermal and mechanical properties were prepared from renewable eugenol, which is extracted from lignocellulosic biomass-clove oil.

Towards sugar-derived polyamides as environmentally friendly materials

As part of our ongoing study investigating isohexide-based polyamides, we have synthesized isosorbide(bis(propan-1-amine)) (DAPIS) and studied its reactivity in the polymerization towards fully biobased polyamides.

Semi-aromatic polyesters based on a carbohydrate-derived rigid diol for engineering plastics

New carbohydrate-based polyesters were prepared from isoidide-2,5-dimethanol (extended isoidide, XII) through melt polymerization with dimethyl esters of terephthalic acid (TA) and furan-2,5-dicarboxylic acid (FDCA), yielding semi-crystalline prepolymers. Subsequent solid-state post-condensation (SSPC) gave high molecular weight (Mn =30 kg mol(-1) for FDCA) materials, the first examples of high Mn , semi-aromatic homopolyesters containing isohexide derivatives obtained via industrially relevant procedures. NMR spectroscopy showed that the stereo-configuration of XII was preserved under the applied conditions. The polyesters are thermally stable up to 380 °C. The TA- and FDCA-based polyesters have high Tg (105 °C and 94 °C, resp.) and Tm (284 °C and 250 °C, resp.) values. Its reactivity, stability, and ability to afford high Tg and Tm polyesters make XII a promising diol for the synthesis of engineering polymers.

Synthesis of Oligo(spiroketal)s from Naturally Occurring myo-Inositol

Dehydrating polycondensation of tetraol-type monomers derived from naturally occurring myo-inositol with 1,4-cyclohexanedione formed a series of oligo(spiroketal)s. One of the spiroketals had reactive allyl pendants, which were useful for side-chain modifications via thiol-ene chemistry.

Isohexide hydroxy esters: synthesis and application of a new class of biobased AB-type building blocks

Here we present the synthesis of a new family of sugar derived 1,4:3,6-dianhydrohexitol based AB-type monomers, containing one methyl ester group and a secondary hydroxyl group in all four possible stereo isomers (RR, RS, SR, SS).

Intramolecular dehydration of mannitol in high-temperature liquid water without acid catalysts

Dehydration reactions in high-temperature liquid water.

Sustainable Polymers: Opportunities for the Next Decade

The field of sustainable polymers is growing and evolving at unprecedented rates. Researchers are increasingly concerned with the feedstock origins and the degradation behavior of, especially, large-scale commodity packaging plastics. A perspective is offered here for the design of sustainable polymers, specifically addressing opportunities for monomer development and polymer degradation. Key concepts include: water degradability instead of biodegradability; incorporation of novel main-chain functionality, such as acetals; utilization of lignin-based aromatics; and direct polymerization of biogenic C1 feedstocks.