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Modyfikowane włókna polipropylenowe do zastosowań medycznych

Boruszewska E.

Zeszyty Naukowe. Włókiennictwo / Politechnika Łódzka

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2009

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z. 65

5-17

PL

Opracowano dwustopniową metodę otrzymywania antybakteryjnych włókien oraz siatek polipropylenowych PP przepuklinowych, na które są wrażliwe bakterie Gram+ i Gram-. Modyfikacja polegała na wprowadzeniu, w pierwszym etapie, do makrocząsteczek polimeru grup karboksylowych. W drugim etapie modyfikacji wyroby PP napawano roztworem biocydu. Na podstawie badań stwierdzono, że siatki zawierające w swej budowie biocyd są w dużym stopniu aktywne w stosunku do badanych bakterii, nie wykazując przy tym działania cytotoksycznego. Wstępne badania (in vivo), wykazały, że modyfikowane siatki nie wykazują działania drażniącego.

EN

The aim of this dissertation was to obtain fibres and polypropylene materials for medical use with prolonged biocidal acivity. The assumption was that biocide should be able to bond to the polypropylene fibre material through chemical bonds. This creates the possibility for biocide at appropriate concentration to detach at a certain time, keeping however, its activity against pathogenic microorganisms. Due to the fact that polypropylene fibres do not have appropriate functional groups that would be able to bond the drug so as to provide them with antibacterial properties, a two-stage modification of polypropylene fibres and hernia nesh was carried out. Modification was based on introducing carboxylic groups at the first stage into the macroparticles of the polymer through PAA grafting. At the second stage of modification, polypropylene materials that included carboxylic groups were imbued with the biocidal solution of: cephalosphorine of the third generation (Cephoperazone), amicoglicozydes (Netylmycyne) and non-organic salts - silver nitrate (each medicine individually). Grafting reaction parameters were adjusted in such a way that a by-product would be created in slight amounts only, thus this method proves to leave practically no by-products behind and is also very economical. There was also an in vitro microbiological evaluation carried out of the antibacterial properties and cytotoxic activity of the modified hernia nesh. It has been concluded that hernia nesh that included biocide in their structure, are highly active against standardized Gram-positive and Gram-negative bacteria strains, e.g. S aureus, E-coli and P. aeruginosa, without showing any cytotoxic activity at the same time. Introductory tests (in vivo) shown that modified PP nesh do not present any irritating activities.

2

Antybakteryjne włókna ciągłe z poli(tereftalanu etylenowego) do zastosowań medycznych

Karbownik I.

Zeszyty Naukowe. Włókiennictwo / Politechnika Łódzka

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2005

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z. 61

33-43

PL

Opracowano metodą otrzymywania antybakteryjnych nici chirurgicznych z poli(tereftalanu etylenowego) PET, na które są wrażliwe bakterie Gram+ i Gram- (gronkowiec złocisty, pałeczka okrężnicy i pałeczka ropy błękitnej). Metoda ta, to dwustopniowa modyfikacja jedwabiu skręconego lub nici chirurgicznych "plecionka", polegająca na wprowadzeniu do nich grup karboksylowych metodą szczepienia, a następnie napawanie tych wyrobów roztworami antybiotyków: z grupy cefalosporyn (Biotrakson) i linkosamidów (Dalacin). Wykonano badania fizyko - chemiczne modyfikowanego jedwabiu PET oraz stwierdzono, że modyfikowane nici chirurgiczne zawierające antybiotyk powodują gojenie się rany bez wysięków i bez stanów zapalnych.

EN

A method of obtaining antibacterial surgical PET threads that would be sensitive to Gram+ and Gram- bacteriae (S.aureus, E.coli and P.aeruginosa) was obtained. The method consists of the incorporation of carboxylic groups into fibres f poly(acrylic acid) PAA grafting copolymerization followed by fibre impregnation with Biotrakson or Dalacin solutions. A method of grafting was used, in which very slightly or not at all can side effects be observed. Infrared studies proved the chemical characted of the bond between the PET fibre and the antibiotic. Moreover, moisture sorption, swelling, elongation tenacity and tenacity in the loop of the modified threads were studied as well. The modified fibres show effective biocide liberation into NaCl solution and antibacterial activity towards Gram positive and Gram negative microorganism (S. aureus, E. coli, P. aeruginosa). Antibiotics released from surgical threads are easily incorporated into the tissue environment and in the environment infected by S. aureus, these modified surgical treads with antibiotics, make a wound heal with neither effusions nor inflammations.

3

Effect of grafting parameters on the strength of modified polyamide yarn

Bucheńska J.

Zeszyty Naukowe. Włókiennictwo / Politechnika Łódzka

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2000

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z. 58

285-292

EN

The aim of the present paper was to examine the mechaical properites such as linear density, tenacity and elongation of grafted polyamide yarn designed for antibacterial surgical threads in order to answer the question whether the adopted method of fibre modification is suitable for that specific application.