Textile‐Fixed Catalysts and their Use in Heterogeneous Catalysis

Opwis, Klaus; Kiehl, K. V.; Straube, Thomas; Mayer‐Gall, Thomas; Gutmann, Jochen S.

doi:10.1002/9781119426790.ch10

Cited by 1 publication

(1 citation statement)

References 38 publications

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“…Textile dyeing technologies, through which fabrics are imparted with different colors using dyeing chemistry to manufacture the final textile products, provided an inspiring idea for catalyst immobilization. First, fabrics produced from cotton, polyamide, or polyester are promising carriers for catalyst immobilization due to the following advantages: (1) good mechanical properties, excellent durability, high chemical resistance, smooth surfaces, and good processability; , (2) the intrinsic flexibility of fabrics makes them capable of being fitted in any reactor geometry and being separated easily without leaving any residues; (3) pore diffusion, which will influence the reactivity of the catalyst, can also be avoided due to the smooth fabric surface; (4) pendant groups on the surface of the polymeric fabrics, for instance, hydroxyl groups on the surface of cellulosic fabrics, or amino groups on the wool fabrics, are powerful moieties for anchoring catalysts; , (5) manufacturing costs for fabrics are much lower than other solid supports, which is especially true for cotton considered as a nearly inexhaustible natural source for fabric production. , Therefore, a variety of bioactive molecules and organocatalysts have been extensively immobilized on fabrics made of cotton, , wool, polyester, , poly(ethylene terephthalate), ,, poly(vinyl alcohol), and poly(amide 6.6). ,, …”

Section: Introductionmentioning

confidence: 99%

A Process for Well-Defined Polymer Synthesis through Textile Dyeing Inspired Catalyst Immobilization

Chu

Corrigan

et al. 2018

ACS Sustainable Chem. Eng.

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Industrialized textile dyeing technology has inspired a scalable and low-cost process for immobilization of a photoredox catalyst onto commercial cotton threads to prepare unique heterogeneous catalyst composites; these composites are capable of regulating photoinduced controlled/"living" radical polymerization in batch and flow reactors. Freebase porphyrin (e.g., tetraphenylporphyrin (TPP)), an efficient photocatalyst for photoinduced electron/energy transfer−reversible addition−fragmentation chain transfer polymerization of acrylamides, was attached to the cotton thread through a method analogous to reactive dye chemistry, to produce composites with excellent photocatalytic activity. Separation and recovery of the catalyst-functionalized composite was realized through simple washing with solvents, which resulted in negligible catalyst leaching and maintenance of catalytic performance over multiple polymerization cycles. Polymerization was also successfully performed in solvents where TPP has poor solubility, demonstrating the versatility of this approach. By taking advantage of the robustness and flexibility of cotton thread, the immobilized catalyst was fitted in a continuous flow reactor to prepare well-defined polymers through a flow process.

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