Trimethylsilylation of Polygalacturonic Acid

Würfel, Hendryk; Kayser, Marvin; Heinze, Thomas

doi:10.1002/macp.201900002

“…The peak at 2958 cm −1 was attributed to the saturated C-H stretching vibration, including -CH 2 - and -CH 3 . while the peaks at 1429 cm −1 and 1258 cm −1 were the characteristic absorption peaks of -Si-CH 2 - and -Si-CH 3 , respectively [ 42 ]. The peak at 1011 cm −1 was the characteristic absorption peak of the organic silicon framework Si-O-Si [ 43 ].…”

Section: Resultsmentioning

confidence: 99%

Design and Synthesis of Functional Silane-Based Silicone Resin and Application in Low-Temperature Curing Silver Conductive Inks

Tang

¹

,

Liu

²

,

Zhang

³

et al. 2023

View full text Add to dashboard Cite

In the field of flexible electronics manufacturing, inkjet printing technology is a research hotspot, and it is key to developing low-temperature curing conductive inks that meet printing requirements and have suitable functions. Herein, methylphenylamino silicon oil (N75) and epoxy-modified silicon oil (SE35) were successfully synthesized through functional silicon monomers, and they were used to prepare silicone resin 1030H with nano SiO2. 1030H silicone resin was used as the resin binder for silver conductive ink. The silver conductive ink we prepared with 1030H has good dispersion performance with a particle size of 50–100 nm, as well as good storage stability and excellent adhesion. Additionally, the printing performance and conductivity of the silver conductive ink prepared with n,n-dimethylformamide (DMF): proprylene glycol monomethyl ether (PM) (1:1) as solvent are better than those of the silver conductive ink prepared by DMF and PM solvent. Cured at a low temperature of 160 °C, the resistivity of 1030H-Ag-82%-3 conductive ink is 6.87 × 10−6 Ω·m, and that of 1030H-Ag-92%-3 conductive ink is 0.564 × 10−6 Ω·m, so the low-temperature curing silver conductive ink has high conductivity. The low-temperature curing silver conductive ink we prepared meets the printing requirements and has potential for practical applications.

show abstract

“…Scheme 17. Silylation of polygalacturonic acid with trimethylsilyl chloride (TMSCl)/imidazole or 1,1,1,3,3,3-hexamethyldisilazane (HMDS) in formamide resulting in trimethylsilyl polygalacturonic acid derivatives (adapted from Würfel et al 2019a)…”

Section: Si-o Bond Formationmentioning

confidence: 99%

Chemical modification of pectin and polygalacturonic acid: A critical review

Würfel

¹

,

Geitel

²

,

Hu

³

et al. 2021

BioRes

Self Cite

4

0

View full text Add to dashboard Cite

Pectin, as a sustainable biopolymer with its two complementary functionalities (carboxyl and hydroxyl moieties) imparted in the α-1,4-galacturonic acid repeating unit, has gained increasing attention in the last few years. The interest in this ubiquitously occurring plant originating polysaccharide (PS) has shifted slowly from applications as a food additive to a broader range of potential applications in medicine, cosmetics, and other industries. Due to the increasing interest in alternatives for petrochemical materials, PSs as biomaterials have gained increasing attention in industrial processes in general. In the last decade, an increasing number of chemical transformations related to pectin have been published, and this is a prerequisite for the design of the structure and hence properties of novel biopolymer-based materials. This work aims to review the chemical modifications of pectin by covalent linkage of the last decade and analyze the materials obtained with these chemical methods critically.

show abstract

“…Scheme 16. Condensation of 3-aminopropyltriethoxysilan with pectin, imine formation with thiophene-1-carbaldehyde, and Pd complexation led to a polysaccharide derivative fit for Suzuki-Miyaura reaction (adapted from Baran 2019) Very recently, a homogeneous approach to prepare silylated pectin derivatives was published employing PGA in dry formamide (FA) with trimethylsilylchloride (TMSCl)/imidazole or 1,1,1,3,3,3-hexamethyldisilazane (HMDS) as reagent (Würfel et al 2019a). The reaction was shown to be more efficient employing HMDS, leading to a trimethylsilyl polygalacturonic acid derivative with a DS of 1.8, on the one hand.…”

Section: Si-o Bond Formationmentioning

confidence: 99%

Chemical modification of pectin and polygalacturonic acid: A critical review

Würfel

¹

,

Geitel

²

,

Hu

³

et al. 2021

BioRes

Self Cite

6

0

View full text Add to dashboard Cite

Pectin, as a sustainable biopolymer with its two complementary functionalities (carboxyl and hydroxyl moieties) imparted in the α-1,4-galacturonic acid repeating unit, has gained increasing attention in the last few years. The interest in this ubiquitously occurring plant originating polysaccharide (PS) has shifted slowly from applications as a food additive to a broader range of potential applications in medicine, cosmetics, and other industries. Due to the increasing interest in alternatives for petrochemical materials, PSs as biomaterials have gained increasing attention in industrial processes in general. In the last decade, an increasing number of chemical transformations related to pectin have been published, and this is a prerequisite for the design of the structure and hence properties of novel biopolymer-based materials. This work aims to review the chemical modifications of pectin by covalent linkage of the last decade and analyze the materials obtained with these chemical methods critically.

show abstract

Trimethylsilylation of Polygalacturonic Acid

Cited by 4 publications

References 22 publications

Design and Synthesis of Functional Silane-Based Silicone Resin and Application in Low-Temperature Curing Silver Conductive Inks

Design and Synthesis of Functional Silane-Based Silicone Resin and Application in Low-Temperature Curing Silver Conductive Inks

Chemical modification of pectin and polygalacturonic acid: A critical review

Chemical modification of pectin and polygalacturonic acid: A critical review

Contact Info

Product

Resources

About