2007
DOI: 10.1016/j.matlet.2006.07.148
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Synthesis and properties of cinnamic acid series organic UV ray absorbents–interleaved layered double hydroxides

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Cited by 35 publications
(22 citation statements)
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“…The mechanical properties of PP are usually affected by the UV photo-oxidative degradation under sunlight [43,44]. To improve the anti-UV ability of PP, photostabilizers with 4-Hydroxy-3-methoxybenzoic acid [33] 4-Hydroxy-3-methoxycinnamic acid [33] 4,4 0 -Diaminostilbene-2,2 0 -disulfonic acid [33] p-Aminobenzoic acid [33] Urocanic acid [33] Cinnamic acid [47] p-Methoxycinnamic acid [47] 2-Phenylbenzimidazole-5-sulfonic acid [35,48] 3,6-Dihydroxynaphthalene-2,7-disulfonate [36] 2-Naphthylamine-1,5-disulfonic acid [36,49] 2,3-Dihydroxynaphthalene-6-sulfonic acid [36,50] Aurintricarboxylic acid [51] UV-shielding properties have been added to the PP composite [35,42,[49][50][51]. Figure 11 shows the compared IR reflectance spectra of PP films with and without the addition of ZnAl-BZO-LDHs during photodegradation process [35].…”
Section: Polypropylenementioning
confidence: 99%
“…The mechanical properties of PP are usually affected by the UV photo-oxidative degradation under sunlight [43,44]. To improve the anti-UV ability of PP, photostabilizers with 4-Hydroxy-3-methoxybenzoic acid [33] 4-Hydroxy-3-methoxycinnamic acid [33] 4,4 0 -Diaminostilbene-2,2 0 -disulfonic acid [33] p-Aminobenzoic acid [33] Urocanic acid [33] Cinnamic acid [47] p-Methoxycinnamic acid [47] 2-Phenylbenzimidazole-5-sulfonic acid [35,48] 3,6-Dihydroxynaphthalene-2,7-disulfonate [36] 2-Naphthylamine-1,5-disulfonic acid [36,49] 2,3-Dihydroxynaphthalene-6-sulfonic acid [36,50] Aurintricarboxylic acid [51] UV-shielding properties have been added to the PP composite [35,42,[49][50][51]. Figure 11 shows the compared IR reflectance spectra of PP films with and without the addition of ZnAl-BZO-LDHs during photodegradation process [35].…”
Section: Polypropylenementioning
confidence: 99%
“…A argila aniônica LDH-c com ânion cinamato (Mg:Al = 2:1) foi sintetizada pelo método de coprecipitação [15] . Nesta síntese, o ácido cinâmico (7,41 g, 50,0 mmol) foi dissolvido em uma solução aquosa de 0,2 mol/L NaOH (100 mL), sob agitação, à temperatura ambiente, resultando em uma solução de pH 9,0.…”
Section: Síntese Da Argila Ldh-c E Obtenção Dos Compósitos Ps1 Ps3 Eunclassified
“…A espessura das lamelas de LDH-Mg 2 Al é igual a 0,48 nm e [17] , como consequência, o valor para o espaçamento lamelar (distância interlamelar -espessura da lamela de LDH-Mg 2 Al) do LDH-c é 1,26 nm. De acordo com a literatura [15] , o comprimento máximo do ânion cinamato é de 1,07 nm, sendo inferior ao espaçamento lamelar (1,26 nm) obtida no LDH-c. Este aumento do espaçamento lamelar indica um tipo de ordenamento em bicamada do ânion cinamato nas galerias do LDH-c devido as interações p-p dos anéis aromáticos e ligações duplas, como apresentado na Figura 2.…”
Section: Análises De Raios Xunclassified
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“…[10][11][12][13][14][15][16] Over the past decades, great improvement has been advanced by intercalation of organic anions into the LDH interlayer to produce multifunctional materials such as UV absorbent. Despite many researches focused on intercalation of organic UV absorbents such as cinnamic acid, naphthalene sulfonic acid, benzoic acid and their derivatives into LDH, 3,[18][19][20][21][22] only few about benzophenone derivatives were reported. 8,17,20,23 Moreover, most of the common benzophenone series UV absorber is hydrophobic, so it is difficult to intercalate these hydrophobic molecules into the LDH interlayer.…”
Section: Introductionmentioning
confidence: 99%