2014
DOI: 10.1016/j.colsurfb.2014.06.047
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Characterisation and functional properties of antimicrobial bio-barriers formed by natural fibres

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Cited by 15 publications
(9 citation statements)
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“…Successful release of the Si-QAC antimicrobial agent from the PNCS microgel particles at temperatures above the LCST of the poly-NiPAAm was further confi rmed with the BPB test, which is based on the formation of a complex between the BPB reagent anion and the quaternary ammonium group of Si-QAC on the surface of the fabric; the formation of this complex dyes the fabric blue. Th erefore, from the K/S values the information about the amount of active quaternary ammonium groups of Si-QAC present on the coated samples can be obtained [12]. From the results in Figure 6 extremely low K/S value of the PNCS+SiQ sample can be seen, comparable to that of untreated sample.…”
Section: Antimicrobial Activitymentioning
confidence: 90%
“…Successful release of the Si-QAC antimicrobial agent from the PNCS microgel particles at temperatures above the LCST of the poly-NiPAAm was further confi rmed with the BPB test, which is based on the formation of a complex between the BPB reagent anion and the quaternary ammonium group of Si-QAC on the surface of the fabric; the formation of this complex dyes the fabric blue. Th erefore, from the K/S values the information about the amount of active quaternary ammonium groups of Si-QAC present on the coated samples can be obtained [12]. From the results in Figure 6 extremely low K/S value of the PNCS+SiQ sample can be seen, comparable to that of untreated sample.…”
Section: Antimicrobial Activitymentioning
confidence: 90%
“…Dentro de la familia de los QAC está el dimetiltetradecil (3(trimetoxisilil) propil) cloruro de amonio (DTAC) que tiene alto poder bacteriostático para el cual se ha comprobado su poder antimicrobiano en muestras de telas de poliéster / algodón contra el S. aureus, y es efectivo incluso después de veinte ciclos de lavado [5]. Otro ejemplo son las sales de amonio cuaternario que contienen grupos silicio (SiQAC); por ejemplo, el sulfopropilbetaína que unido covalentemente a telas de algodón presenta actividad antibacterial contra E. coli, S. aureus y Candida albicans [39]; también se han empleado SiQAC en telas de algodón, lana y seda, en las cuales se les ha probado actividad antomicrobiana contra bacterias tipo E. coli y S. aureus, y contra hongos tipo A. niger y Chaetomium globosum, encontrando mayor efectividad en las telas celulósicas que en las proteicas [46]. Adicionalmente, los QAC se han utilizado en modificaciones de fibras de algodón, poliéster, poliamida, lana [24]; también en mezclas algodón/poliamida [47].…”
Section: Compuestos Sintéticos Orgánicosunclassified
“…V literaturi so objavljene številne raziskave na področju protimikrobne zaščite tekstilnih vlaken, ki obravnavajo vpliv različnih dejavnikov na učinkovitost njihovega protimikrobnega delovanja. Med dejavniki lahko omenimo strukturo in koncentracijo sredstva [3][4][5][6][7][8], mehanizem protimikrobnega delovanja [3,[9][10][11][12], postopek priprave in nanosa sredstva na vlakna [13][14][15][16][17], strukturo in lastnosti tekstilnih vlaken [18,19] ter njihovo predhodno obdelavo [20][21][22][23][24]. Prav tako smo v literaturi zasledili podatke o vplivu prisotnosti protimikrobne apreture na mehanske last nosti vlaken [25], njihovo omočljivost [25], barvo in belino [26][27][28][29], nismo pa še zasledili študij, ki bi vključevale sistematično proučevanje vpliva protimikrobne apreture na barvo in barvno obstojnost različnih obarvanj.…”
Section: Uvodunclassified
“…V ta namen smo izbrali protimikrobno apreturo sol-gel na podlagi organosilicijevega polimera s stransko alkildimetilamonijevo skupino. Izbor apreture ni bil naključen, saj je bilo ugotovljeno, da na površini tekstilnih vlaken oblikuje zvezni zamrežen nanokompozitni polimerni fi lm, ki prevleče vlakna in se z njih tudi po večkratnem pranju ne odstrani [8,14,30]. Stranske kationske skupine, ki so usmerjene stran od površine vlaken, delujejo kot biološka ovira za različne mikroorganizme [30].…”
Section: Uvodunclassified