羽毛角蛋白的护发效果研究

采用还原法制备的羽毛角蛋白溶液处理受损头发,研究角蛋白对头发的亲和作用和修复效果.结果表明,角蛋白对头发有良好的亲和作用,并能在受损头发表面形成光滑膜,修复毛小皮鳞片受损处,改善头发的光泽和弹性.头发涂覆角蛋白后,其卷曲保持率明显提高.角蛋白可吸收200～300nm范围内的紫外线,能有效提高头发抗紫外线的能力.     

应用于个人清洁护理产品中的新型聚合物调理剂

汽巴(R)赛尔可(R)SC60是丙烯酰胺丙基三甲基氯化铵/丙烯酰胺共聚物,具有很高的分子量和电荷密度,在头发上有很好的直接性(Sunstantivity),与个人护理品中的常用表面活性剂均具有很好的相容性,可应用于透明和不透明配方中,在个人清洁护理品中的加入量仅为0.02%～0.20%赛尔可(R)SC60可大大减少头发的毛鳞片翘起,降低头发的损伤,赋予头发更好的光泽;赛尔可(R)SC60还可以降低头发梳理过程中的梳理力,使头发更加易于梳理;该产品可广泛应用于香波、沐浴露、洗面奶和洗手液等个人清洁产品中,为配方提供优异的调理性.     

头发光损伤评价方法与防护

紫外线的辐射会造成头发的光损伤。简述了紫外线对头发的损伤表现,对头发光损伤的评价方法进行了详细综述,介绍了头发光损伤的防护,同时对防晒洗护发产品的发展趋势进行了展望。     

光催化织物整理

光催化整理是新近推出的集多功能为一体的整理产品。其作用机理是：附着于整理织物上的光催化剂（主要成分为二氧化钛）经过紫外光线照射后，其织物表面及周围空气中会产生活性氧，从而具有抗击微生物和臭气成份中有机物的功能，以此发挥面料的除臭、抗菌功效，同时由于金属元素二氧化钛在织物上的附着，对紫外线起到反射和散射作用，使整理织物具有很好的抗紫外线效果。     

鸡毛角蛋白的制备及其护发性能

采用还原C法提取了鸡毛角蛋白,考察了反应时间和温度对角蛋白产率和黏度影响。采用傅里叶变换红外光谱仪对提取物进行了表征。利用透析得到的角蛋白对头发进行处理,考察了其保湿及抗紫外线的效果。结果表明:当温度70℃、时间4 h时能够制得产率和黏度均较为理想的角蛋白溶液。红外谱图表明提取物为β-折叠结构的角蛋白。经角蛋白处理后的头发具有较好的保湿性,紫外谱图表明浓度6.7 g/L的羽毛角蛋白溶液对波长200～350 nm的紫外线有较好的吸收作用。     

甜菜碱在洗护发产品中的应用

分析了当前困扰消费者的头发、头皮问题和洗护发市场的最新趋势,指出头皮护理是头发护理的基础。介绍了甜菜碱的结构和基本性质,说明甜菜碱具有保湿、维持渗透压、降低表面活性剂或去屑剂对头皮的刺激、修复损伤头发、改善梳理性等作用,对头皮和头发有较好的护理效果,适用于洗护发产品,同时列举了市场上几款添加了甜菜碱的热门洗发产品。     

一种亮光仿电镀金属效果陶瓷釉的应用技术研究

通过利用该釉高温烧结过程中饱和析出金属颜色晶体，使陶瓷表面具有仿亮光金属电镀效果，可以强化陶瓷的表面装饰作用。同时该产品具有亮光的镜面效果，平整度好，产品坯釉层结合良好，热稳定性高，对紫外线和红外线有屏蔽作用，具有很好的反光隔热作用。同时有很高的耐磨性、良好的绝缘性和抗腐蚀性等特点，可以作为外墙隔热陶瓷材料以及内墙装饰用陶瓷材料使用。     

第十一章 聚氯乙烯用紫外线吸收剂和紫外线稳定剂

第一节 紫外线吸收剂 紫外线吸收剂是一种能吸收透明,半透明、白色、彩色塑料表面和内部对光老化有害的紫外线,将其转变成天害的能(大部分为热能)而排出的有机化合物其吸收范围是300—400mμ,而聚氯乙烯,最大老化波长是310mμ,氯乙烯醋酸乙烯共聚物的最大老化波长是322和364mμ)。 使用紫外线吸收剂的方法有混炼法和表面涂布法在聚氯乙烯等塑料加工中,几乎都是用混炼法,但为保护带色塑料制品也有将紫外线吸收剂和涂料混合涂布的。 紫外线吸收剂的作用有     

钛酸酯螯合物合成及其对紫外线的吸收性能研究

一、前言太阳光线中包括紫外线(400nm以下)、可见光线(400～760nm)、红外线(760nm以上).其中紫外线又可分为短波紫外线(UV-C:200～290nm)、中波紫外线(UV-B:290～320nm)、长波紫外线(UV-A:320～400nm).290nm以下的紫外线被地表25千米上空的臭氧层吸收,不能到达地表面.290～320nm的紫外线作用最强,能使塑料、橡胶、涂层等产生光氧     

遮蔽紫外线的超细氧化锌

<正> 日本住友水泥公司最近开发出具有遮蔽紫外线功能的超细氧化锌;同时确立了将这种超细粉粒涂布在塑料表面的技术。迄今具有遮蔽紫外线效果的物质虽以超细氧化酞为其代表,而该公司开发的超细氧化锌的特点是,能够遮蔽波长为200nm～400nm的所有紫外线。该公司充分利用这种功能向化妆品、油墨以及作为透明膜的电子领域为目标     

Silver nanoparticles formation within unsaturated polyester/styrene resins induced by UV irradiation and thermal treatment

This article describes the formation of silver nanoparticles (NPs) within preformed unsaturated polyester/styrene resins in which the resulting color could be tuned by changing the silver load, time, and method used to grow the NPs. NP size and aggregation are responsible for the resulting sample color, and the samples present very good optical transparency. The silver ions were first added to the prepolymer that was crosslinked by free radical polymerization in the absence of light. NP formation was subsequently induced by submitting the transparent and colorless samples to heat or UV irradiation. Within the heated samples, isolated spherical particles ranging from 3 to 40 nm were observed. UV irradiation led to the formation of particle aggregates; however, as the exposure time was increased, silver NPs became well dispersed within the matrix within a particle diameter range of 9 to 24 nm. The particle formation is faster when induced by UV irradiation. Samples were also prepared by first dissolving rhodamine 6G in the resin. The emission bandwidth of samples prepared in this way showed a dependence on the silver particles amount and size. POLYM. ENG. SCI., 2010. © 2010 Society of Plastics Engineers     

铁酸铋功能陶瓷薄膜的液相自组装制备

利用自组装单层膜技术,以三氯十八烷基硅烷(octadecyl trichlorosilane,OTS)为模板,以硝酸铋和硝酸铁为原料,在玻璃基片上成功制备了铁酸铋(BiFeO3)晶态薄膜。采用接触角仪测量了紫外光照射后OTS单层膜的亲水性。通过X射线衍射、扫描电镜和能谱仪等表征了BiFeO3薄膜的物相、表面形貌及微观结构。结果表明:紫外光照射使OTS单层膜由原来的强疏水性转变为良好的亲水性,说明OTS自组装膜层表面已被羟基化。在70℃沉积8h并经600℃退火2h制备的BiFeO3薄膜结晶良好,薄膜样品的表面平整,厚度较为均匀,薄膜厚度约为100nm。     

NaBaY(BO3)2:Ce3+,Tb3+: A novel sharp green‐emitting phosphor used for WLED and FEDs

A new borate phosphor NaBaY(BO₃)₂: Ce³⁺, Tb³⁺ (NBY:Ce³⁺, Tb³⁺) was successfully synthesized under low temperature designed to put into application in the fields of ultraviolet (UV)‐excited light emitting diodes (LEDs) and field emission displays (FEDs). The structure distortion between Ce³⁺, Tb³⁺ single‐ and co‐doping NBY was discussed by X‐ray powder diffraction Rietveld refinement, high‐resolution transmission electron microscopy (HRTEM) and spectra. NBY: Ce³⁺, Tb³⁺ presents a wide absorption band ranging from 310 to 400 nm and efficient green emission (λ_max = 542 nm) with a full‐width at half‐maximum of 3.3 nm. The remarkable thermal stability has also been tested, indicating that the intensity at 200°C is still beyond 70% of the original intensity. In addition, a white LED device was manufactured by connecting a 370 nm UV chip with a blend of BaMaAl₁₀O₁₇: Eu²⁺ (BAM: Eu²⁺), NBY: Ce³⁺, Tb³⁺ and CaAlSiN₃: Eu²⁺. The color coordinate, correlated color temperature and color rendering index of the manufactured LED device were (0.335, 0.347), 5511 K and 80.16, respectively. Meanwhile, the cathodoluminescence (CL) spectra under the various conditions of probe currents and accelerating voltages were also analyzed. Through successive excitation of low‐voltage electron‐beam, the wonderful performances of degradation property and color stability were obtained. These results suggest that the green‐emitting NBY: Ce³⁺, Tb³⁺ phosphor has the prospect of becoming applications in white UV LEDs and FEDs.     

Synthesis and characterization of waterborne polyurethane containing UV absorption group for finishing of cotton fabrics

To improve the ultraviolet resistance and color fastness of the cotton fabrics, a new multifunctional finishing agent of waterborne polyurethane containing UV absorption group (WPUUV) was synthesized and characterized with ¹HNMR and UV spectroscopy. Stability of WPUUV and their finishing performance on cotton fabrics were investigated. Results showed that the various color fastnesses such as the dry and wet rubbing fastnesses, wrinkle recovery angle and softness of the dyeing cotton fabrics were obviously improved by WPUUV, which provided good UV protection function for dyeing cotton fabrics as well.     

Gel-sol synthesis of surface-treated TiO2 nanoparticles and incorporation with waterborne acrylic resin systems for clear UV protective coatings

Visible transparent UV protective coatings were developed by incorporating nano-TiO₂ into waterborne acrylic systems to provide UV protection for UV-sensitive color cool roofing. Water-based high crystalline TiO₂ nanoparticle suspension was prepared via a gel-sol method at a basic pH. The TiO₂ nanoparticles have an average size of 20 nm and are stable against agglomeration. As-prepared TiO₂ nanosuspension is ready to be well dispersed in commercial waterborne acrylic resin system without extra-surface modification. The fabricated TiO₂/acrylic nanocomposite coating achieved a UV cut-off below 350 nm with a visible transmission greater than 85% at 700 nm. It is also demonstrated by using Rhodamine 6G that surface modification of nano-TiO₂ with a SiO₂ insulation layer would suppress the catalytic activity of nano-TiO₂ and improve the UV protection for UV and photocatalysis sensitive dyes.     

光致变色化合物螺萘并吡喃的合成及光谱性能

以2-萘酚、苯肼和3-甲基-2-丁酮为原料,设计并合成了一种含萘环螺吡喃类光致变色化合物:1,3,3-三甲基吲哚啉螺萘并吡喃,通过1HNMR、IR和元素分析表征了它的分子结构,利用紫外光谱和荧光光谱对目标化合物的吸收光谱和光致发光光谱进行了研究,初步探索了目标产物的光致变色性能。吸收光谱结果表明,目标分子(闭环体)的二氯甲烷溶液(1×10-4mol/L)在可见光区基本无吸收而呈现无色,但经254 nm的紫外光照射后其开环体在480 nm处有较强的吸收而呈现红色(A=1.1),停止紫外光照射溶液恢复为无色,显示了良好的光致变色性能;发光光谱结果显示,目标分子经紫外光激发后其开环体在433 nm处有较强的蓝光发射。     

1,4-二[2-(吡啶基)-1,3,4-(噁)二唑基]苯的合成及其光谱性质

利用双二酰肼的脱水化反应制备了两种新颖对称双二噁唑。通过IR、1HNMR、MS及元素分析等对化合物的结构进行表征。研究了此双噁二唑化合物在溶剂DMF中浓度为1×10-7mol/L时的紫外光谱和荧光光谱性质。结果表明:目标化合物在DMF溶液的最大紫外吸收波长在310 nm,最大荧光发射波长在364和383 nm。     

Synthesis and properties of polyether with short alternating conjugated and nonconjugated blocks containing oxadiazole units

A polyether, poly[(2,5‐dimethylene‐1,3,4‐oxadiazole)dioxy‐1,4‐phenylene‐1,2‐ethenylene‐1,4‐phenylene‐1,2‐ethenylene‐1,4‐phenylene], based on short alternating conjugated oxadiazole units, has been synthesized, which is a kind of PPV derivative that emits blue light. The resulting polymer is fairly soluble in chloroform. The synthesized polymer shows a UV–visible absorbency maximum wavelength around 310 nm in solution. The photoluminescence maximum wavelength for the resulting polymer appears around 470 nm. The polymer also exhibits good thermal stability up to 300°C under N₂ atmosphere. It is also observed that the onset temperature of thermal decomposition is as high as 355°C. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 86: 2682–2686, 2002     

Fast photo-switched wettability and color of surfaces coated with polymer brushes containing spiropyran

An intelligent photo-responsive spiropyran (SP)-contained surface that combines reversible wettability conversion with photochromic behavior was prepared on etched silicon substrates by atom transfer radical polymerization. The heterocyclic ring cleavage of SP moieties under UV irradiation leads to the change of the surface wettability and color. Water contact angle (CA) of the prepared surfaces change from 138.8° ± 1.3° to 42.7° ± 1.7° after 5 min under 365 nm UV irradiation and recover to its original state after 20 min of visible light irradiation, accompanied by the color change between yellowish and purple. To our knowledge, this result is the highest and fastest CA variation reported for surfaces containing SPs. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012     

Enhanced near band edge luminescence of Ti/ZnO nanorod heterostructures due to the surface diffusion of Ti

Information on the mechanistic differences in the luminescence properties of Ti/ZnO nanorods (NRs) has been obtained through the preparation of heterostructures by (a) varying the thickness of Ti from 1 nm to 20 nm keeping the substrate temperature at 400 °C, (b) varying the substrate temperature from room temperature (RT) to 500 °C while keeping the metal thickness constant at 10 nm and (c) annealing the RT Ti sputtered NRs at temperatures of 400 °C and 500 °C. The photoluminescence (PL) spectra show that the near band edge luminescence of ZnO in the ultraviolet (UV) region is enhanced as the thickness of Ti increases up to 5 nm and, thereafter, it falls. Sputtering of Ti on ZnO NRs at RT does not cause any UV enhancement but when sputtered at and above 400 °C, the UV intensity is enhanced. Annealing of RT Ti sputtered NRs at and above 400 °C also results in the enhancement of the UV peak, although with a lesser magnitude. Analysis of the PL results, supported by X-ray diffraction, field emission scanning electron microscopy, elemental mapping, high resolution transmission electron microscopy, Fourier transform infrared spectroscopy and electrical I-V measurement results, show a clear indication that the surface diffusion of Ti causes a reduction in the surface defects.