. "Modifikace proteinick\u00FDch hydrolyz\u00E1t\u016F \u010Din\u011Bn\u00E9ho kolagenn\u00EDho odpadu" . . . . . "1"^^ . "Modification of protein hydrolysate of tanned collagen waste"@en . "\u0160\u00EDvarov\u00E1, Jarmila" . "Pomoc\u00ED termick\u00E9 anal\u00FDzy byla zkoum\u00E1na kondenzace dimetylolmo\u010Doviny, a sm\u011Bs\u00ED dimetylolmo\u010Doviny s mo\u010Dovinou \u010Di kolagenn\u00EDm hydrolyz\u00E1tem, bez p\u0159\u00EDtomnosti i v p\u0159\u00EDtomnosti kysel\u00E9ho katalyz\u00E1toru (kyseliny ftalov\u00E9). Dimetylolmo\u010Dovina v tomto p\u0159\u00EDpad\u011B slou\u017E\u00ED jako metylol-oligomern\u00ED model mo\u010Dovino-formaldehydov\u00FDch prysky\u0159ic.Pr\u016Fb\u011Bh kondenzace je ovlivn\u011Bn 2 reakcemi, p\u0159i nich\u017E vznikaly 2 typy vazeb, oxi-metylenov\u00E9 a metylenov\u00E9 m\u016Fstky. Je pravd\u011Bpodobn\u00E9, \u017Ee oximetylenov\u00E9 m\u016Fstky mohou b\u00FDt pova\u017Eov\u00E1ny za potenci\u00E1ln\u00ED zdroj emis\u00ED vytvrzen\u00FDch mo\u010Dovino-formaldehydov\u00FDch adhezivn\u00EDch film\u016F. P\u0159\u00EDdavek 5% kolagenn\u00EDho hydrolyz\u00E1tu k dimetylolmo\u010Dovin\u011B sni\u017Euje rychlost vzniku nestabiln\u00EDch oximetylenov\u00FDch vazeb ve prosp\u011Bch stabiln\u011Bj\u0161\u00EDch metylenov\u00FDch m\u016Fstk\u016F o 20-30%. Kysel\u00FD katalyz\u00E1tor zvy\u0161uje rychlost vzniku obou typ\u016F vazeb, nav\u00EDc v\u0161ak p\u0159i vy\u0161\u0161\u00EDch teplot\u00E1ch (165-175\u00B0C) m\u016F\u017Ee zp\u016Fsobovat p\u0159echod oximetylenov\u00FDch m\u016Fstk\u016F na metylenov\u00E9 m\u016Fstky. Hydrolyz\u00E1ty chromo\u010Din\u011Bn\u00E9ho us\u0148ov\u00E9ho odpadu a vhodn\u00FD kysel\u00FD katalyz\u00E1tor mohou sn\u00ED\u017Eit emise form"@cs . . "Pomoc\u00ED termick\u00E9 anal\u00FDzy byla zkoum\u00E1na kondenzace dimetylolmo\u010Doviny, a sm\u011Bs\u00ED dimetylolmo\u010Doviny s mo\u010Dovinou \u010Di kolagenn\u00EDm hydrolyz\u00E1tem, bez p\u0159\u00EDtomnosti i v p\u0159\u00EDtomnosti kysel\u00E9ho katalyz\u00E1toru (kyseliny ftalov\u00E9). Dimetylolmo\u010Dovina v tomto p\u0159\u00EDpad\u011B slou\u017E\u00ED jako metylol-oligomern\u00ED model mo\u010Dovino-formaldehydov\u00FDch prysky\u0159ic.Pr\u016Fb\u011Bh kondenzace je ovlivn\u011Bn 2 reakcemi, p\u0159i nich\u017E vznikaly 2 typy vazeb, oxi-metylenov\u00E9 a metylenov\u00E9 m\u016Fstky. Je pravd\u011Bpodobn\u00E9, \u017Ee oximetylenov\u00E9 m\u016Fstky mohou b\u00FDt pova\u017Eov\u00E1ny za potenci\u00E1ln\u00ED zdroj emis\u00ED vytvrzen\u00FDch mo\u010Dovino-formaldehydov\u00FDch adhezivn\u00EDch film\u016F. P\u0159\u00EDdavek 5% kolagenn\u00EDho hydrolyz\u00E1tu k dimetylolmo\u010Dovin\u011B sni\u017Euje rychlost vzniku nestabiln\u00EDch oximetylenov\u00FDch vazeb ve prosp\u011Bch stabiln\u011Bj\u0161\u00EDch metylenov\u00FDch m\u016Fstk\u016F o 20-30%. Kysel\u00FD katalyz\u00E1tor zvy\u0161uje rychlost vzniku obou typ\u016F vazeb, nav\u00EDc v\u0161ak p\u0159i vy\u0161\u0161\u00EDch teplot\u00E1ch (165-175\u00B0C) m\u016F\u017Ee zp\u016Fsobovat p\u0159echod oximetylenov\u00FDch m\u016Fstk\u016F na metylenov\u00E9 m\u016Fstky. Hydrolyz\u00E1ty chromo\u010Din\u011Bn\u00E9ho us\u0148ov\u00E9ho odpadu a vhodn\u00FD kysel\u00FD katalyz\u00E1tor mohou sn\u00ED\u017Eit emise form" . "RIV/70883521:28110/06:63505068" . "Modifikace proteinick\u00FDch hydrolyz\u00E1t\u016F \u010Din\u011Bn\u00E9ho kolagenn\u00EDho odpadu"@cs . "Modifikace proteinick\u00FDch hydrolyz\u00E1t\u016F \u010Din\u011Bn\u00E9ho kolagenn\u00EDho odpadu"@cs . "Modifikace proteinick\u00FDch hydrolyz\u00E1t\u016F \u010Din\u011Bn\u00E9ho kolagenn\u00EDho odpadu" . "collagen hydrolysates; urea-formaldehyde resins; thermal analysis; TGA; DSC; adhesives"@en . . . "28110" . "[47C20A134087]" . "Modification of protein hydrolysate of tanned collagen waste"@en . "RIV/70883521:28110/06:63505068!RIV07-MSM-28110___" . "S" . "1"^^ . . . . . . "486531" . . . "Thermal analysis was used for investigation of condensation of dimethylolurea and blends of dimethylolurea with urea and with the collagen hydrolysate, in the presence, or absence, of an acid curing agent (phthalic acid). Dimethylolurea is in this case used as a model of methylol oligomers of urea-formaldehyde adhesives. The condensation is provided by two reactions creating two types of cross-links (oximethylene and methylene bridges). Oximethylene bridges may be regarded as a potential source of formaldehyde emissions by cured urea-formaldehyde adhesive films. An addition of a mass fraction 0,05 of collagen hydrolysate to dimethylol-urea can reduce about 20-30% rate of formation of oximethylene bridges in favour of more stable methylene bridges. Acid curing agents accelerate the rate of both types of cross-links, but at the same time within higher temperatures (165-175\u00B0C) influence transformation of oximethylene bridges to methylene bridges. Hydrolysate of chrome-tanned leather waste and a sui"@en . . .