洗涤剂原料MES的性能和环境特性

1、前言 为防止地球转暖,以植物来源的原料替代石化原料的进程将加速。LION公司1991年开始以植物油脂为原料规模生产阴离子表面活性剂MES（α-磺化脂肪酸甲酯盐）,并以MES为主表面活性剂配制成功衣料用粉末洗涤剂,挤占了部分以LAS为主表面活性剂的洗涤剂市场。     

是谁促使LION将MES推向世界

MES是表面活性剂α-磺化脂肪酸甲酯钠盐的简称，它早在二十世纪八十年代即已开发成功。MES与烷基苯磺酸钠（LAS）、α-烯基磺酸钠（AOS）类似，都可以用作配制衣料用洗衣粉的主表面活性剂。与LAS、AOS的不同之处在于，MES的主要原料来自植物油。所以，MES具有两大优点：     

脂肪酸甲酯磺酸钠在洗衣液中的应用研究

脂肪酸甲酯磺酸钠（MES）是以天然油脂为原料生产的新型高效阴离子表面活性剂。将MES和其他表面活性剂复配,进行相应的配方性能评价和应用性能研究。配方性能评价研究结果表明,含MES的洗衣液具有适合日常使用的泡沫量、黏度以及良好的耐寒和耐热稳定性。在应用性能方面的研究表明,含MES的洗衣液具有良好的去污性和耐硬水性。     

赞宇科技受累产品压价

赞宇科技主要产品是以AES和MES等为代表的阴离子表面活性剂和以烷醇酰胺为代表的非离子表面活性剂。阴离子表面活性剂由于原材料易得、成本较低,性能较好,应用范围和使用量均领先于其他类别;其中AES市场占有率约30%,国内第一。MES国内率先量产MES以天然油脂为原料,具有去污力强、与酶相容性好、对皮肤刺激性小等优点,具有出色的抗硬水能力,可以减少添加的三聚磷酸钠等硬水磷助剂的     

常用表面活性剂的性能分析比较

文章主要探讨了阴离子、非离子、两性离子三类表面活性剂的去污力、泡沫性能,考察了Nacl对表面活性剂的增稠作用,并进行了对比分析。结果表明,MES、AES、AEO-7、AEO-9和CAB的去污力较为突出;阴离子表面活性剂属于高泡型洗涤原料,非离子表面活性剂属于低泡型洗涤原料;NaCl对表面活性剂的增稠效果只有当添加量在一定范同内时才有效。该结论为洗涤产品的配方研发提供了依据。     

脂肪酸甲酯磺酸钠在个人清洁用品中的应用

脂肪酸甲酯磺酸钠（MES）是以天然油脂为原料制备得到的绿色表面活性剂．具有优异的去污性、钙皂分散性、乳化性、耐硬水性．以及极低的刺激性、毒性和易生物降解性。通过MES和其他表面活性剂复配,进行相应的配方应用性能研究．并对产品进行实际洗涤性能评价。结果表明含有MES的个人清洁用品有适宜的泡沫和稳定性．并具有;中洗时间短、洗后肤感清爽等优点。     

符合可循环、节能和环保原则的绿色表面活性剂--α-磺基脂肪酸甲酯盐

α-磺基脂肪酸甲酯盐（简称MES）,是利用天然油脂为原料的表面活性剂.与石油来源的烷基苯磺酸等传统的表面活性剂相比较,MES有许多优异和独特的性能,同时在价格上具有相当的优势,MES的原料油脂来源于可再生资源,因此具有环保特点.在当前石油资源严重短缺、洗涤剂的环保问题急待解决之时,提出这个项目,无论是就其项目本身,还是就其开发的策略来说,都是具有重大的战略意义.还介绍了该产品的制法、性能以及国外应用的现状.     

关于MES性能与应用的疑惑、诀窍和前景

文献报道了MES的许多优点,也提到其性质上可能存在的某些缺点。比如,研究表明纯组分MES的浊点高于其他阴离子表面活性剂,于是怀疑MES的溶解性可能会限制其在冷水中的洗涤。再则,MES的水解稳定性低于其他阴离子表面活性剂,这可能是MES的另一个主要缺点。拟探讨这些问题,并将提出一些证据,以表明MES实际上是一种卓越的表面活性剂,完全可以配方出适用于低温洗涤的洗涤剂产品。介绍了一些采用MES为主要表面活性剂生产洗衣粉和液洗剂的工艺。     

MES与皂的复配性能

MES是以天然油脂为原料,具有良好的去污性、钙皂分散性、乳化性、增稠性和耐硬水性,以及极低的刺激性、毒性和优良的生物降解性,是安全性高的表面活性剂。进行了MES与皂复配的性能试验,结果表明,MES对皮肤刺激性低,可提高产品的抗硬水性能,避免钙镁皂垢吸附在清洁用具表面。     

脂肪酸甲酯磺酸钠在洗涤剂中的应用性能研究

将脂肪酸甲酯磺酸钠(MES)分别配成液体和粉状洗涤剂,测定不同时间内MES的水解率、表面活性剂的发泡力、表面活性剂和洗涤剂的去污力。结果表明,MES在碱性液体洗涤剂和洗衣粉料浆中容易水解,在10%的碳酸钠溶液中水解率达28.87%;MES在硬水中的发泡力明显好于烷基苯磺酸钠(LAS)。无论是表面活性剂还是在洗涤剂中,MES均显示出超强的去污力,去污力比值是LAS的1.6~1.7倍;MES与LAS复配时,去污力无协同增效作用。     

Characterization of Phosphate-Free Detergent Powders Incorporated with Palm C16 Methyl Ester Sulfonate (C16MES) and Linear Alkyl Benzene Sulfonic Acid (LABSA)

Laboratory and pilot scale investigations were carried out on phosphate-free detergent (PFD) formulations comprising binary anionic surfactants of C16 palm methyl ester sulfonates (C16MES) and linear alkyl benzene sulfonic acid (LABSA) with the aim of maximizing the incorporation of C16MES into low density detergent powders without compromising the detergency and other significant properties. Initial laboratory experiments revealed that the detergent powder resulting from C16MES/LABSA with a 50:50 ratio and pH 7–8 has acceptable detergency stability over 1 week of accelerated ageing test at 50 °C and 85 % relative humidity. Subsequent experiments were carried out in a 5-kg/h-capacity pilot spray dryer using PFD formulations of C16MES/LABSA over the whole range of weight ratios under the same pH of 7–8. The concentration of the detergent slurry and cleaning performance (detergency, foaming ability and wetting power) of the resulting spray dried detergent powder (SDDP) were evaluated. C16MES/LABSA in a 40:60 ratio was selected as the ideal formulation based on its optimum detergent slurry concentration and comparable cleaning performance against the control formulation. Further environmental tests have confirmed that SDDP obtained from the ideal formulation is readily biodegradable (60 % in 13 days) and exhibits low eco-toxicity properties (LC₅₀ of 11.3 mg/L).     

Ecotoxicology Study of Various Homologues of Methyl Ester Sulfonates (MES) Derived from Palm Oil

Methyl ester sulfonate (MES) is an anionic surfactant derived from palm oil through sulfonation of fatty acid methyl esters. Due to limited ecotoxicological data on MES, this study was initiated to evaluate the ecotoxicological properties of MES and its impact to the environment. The respirometric method (OECD 301F) was used to monitor the biodegradation of various homologues of MES over 28 days. The algae growth inhibition test (OECD 201) was conducted to assess the effects of palm‐based MES towards green algae by exposing exponentially‐growing cultures of Pseudokirchneriella subcapitata (P. subcapitata) to five concentrations of MES with maximum concentrations of 100 mg/L. Results showed all MES samples were readily biodegradable, where the biodegradability of each homologue surpassed 60% within 28 days. It was also observed that the longer the carbon chain length of MES, the solubility and the biodegradability rate decreased. The ecotoxicity of C12 and C14 MES towards P. subcapitata after 72 h of experiment showed no inhibition of algae growth in C12 MES while, the growth of algae decreased as the concentration of C14 MES increases. The EC₅₀ value for C14 MES and C16 MES towards green algae was >100 and >10 mg/L, respectively. It can be concluded that C12 and C14 MES were practically non‐toxic towards P. subcapitata and the toxicity increased with an increase in chain length of the surfactant (EC₅₀ value decreases). Therefore homologues of palm‐based MES are not expected to cause environmental concern due to their biodegradability and low toxicity in the aquatic environment.     

EPDM-g-MS/MS共混物的热性能及流变性能

用溶液聚合法合成的EPDM（乙烯／丙烯／二烯共聚物）与MMA（甲基丙烯酸甲酯）及St（苯乙烯）接枝共聚物（EP—DM—g—MS）与MS（苯乙烯-甲基丙烯酸甲酯共聚物）树脂共混制备MES（EPDM—g—MS增韧MS），通过热重分析研究了MES的热稳定性，通过测试MES的表观粘度、非牛顿指数和粘流活化能等流变参数，分析其流变性能。结果表明，MES具有较好的耐热性能，且随EPDM-g—MS含量及MMA／St配比的增加而提高。MES的非牛顿指数小于1，符合假塑性流体流动规律。其表观粘度随剪切速率和温度升高而降低，随EPDM-g—MS含量增加而提高。MES的粘流活化能小于MS树脂的。     

脂肪酸甲酯磺酸盐

脂肪酸甲酯磺酸盐简称(MES)是以天然动植物油脂为原料制得的脂肪酸系阴离子表面活性剂。它具有良好的去污性、钙皂分散性、抗硬水性、乳化性、增溶性和生物降解性,并能改进肥皂的溶解性。由于MES性能优良,主要用于合成洗衣粉、复合皂粉、复合肥皂、香波以及个人清洁用品中。对MES的生产现状、产品形式、性能以及应用进行了概述。     

连续工业生产与离散工业生产MES的比较

在对比连续工业生产与离散工业生产物料及产品特点的基础上，分析两种生产类型的特点，比较两者对MES各模块功能需求及模块间关系存在的差异。通过比较分析进一步促进流程工业MES的研究工作，建立能适应多种工业生产类型的MES体系结构，提升混杂生产类型的企业内部及企业间的信息系统集成水平。为建立可重构、可配置、可扩展的MES体系结构建立基础，缩短MES开发周期，降低系统实施成本，进一步推进企业信息化的发展。     

The influence of non-carcinogenic petroleum-based process oils on tire compounds’ performance

High aromatic oils which have been widely used as process oils in tire the industry contain high concentrations of polycyclic aromatic hydrocarbons (PAHs). These aromatic compounds (PAHs) have proved to be carcinogenic as well as posing a threat to the environment. Since the beginning of 2010, the use of high aromatic process oils has been banned under the EU regulation 1907/2007 commonly called REACH (registration, evaluation, authorization and restriction of chemicals). The so-called regulation has given rise to challenges to the oil and tire industries in replacing high aromatic process oils with safer alternatives. In the present work, four types of low aromatic petroleum-based process oils, namely mild and high-viscosity naphthenic oils (LNAP and HNAP), treated distillate aromatic extract (TDAE) and mildly extracted solvate (MES), were investigated and their effect on plasticization and durability properties of two different low and high oil-extended tire formulations were evaluated. The compatibility of oils with rubber was investigated as well. The results showed that a number of properties such as abrasion resistance and tire rolling resistance were improved by using non-carcinogenic oils, while tire grip properties were declined. Considering oil–rubber compatibility, TDAE and MES were found to be more compatible with rubbers.     

脂肪酸甲酯磺酸钠在衣用液体洗涤剂中的应用

对目前市售几种规格的脂肪酸甲酯磺酸钠（MES）产品进行了对比,提出了衣用液体洗涤剂配方和生产技术对MES产品的技术要求。研究了MES在衣用液体洗涤剂中与LAS、AES等其他类型表面活性剂复配对体系去污力、泡沫性能、稳定性以及储存过程中二钠盐含量变化的影响。结果表明,在衣用液体洗涤剂配方体系中,MES与LAS复配去污性能增效明显,与LAS＋AES复配有一定的去污增效作用,而与AES复配没有增效作用。随复配体系中MES加量的增加,洗衣液泡沫下降,随储存时间的延长和储存温度的升高,产品中二钠盐含量增加。     

Structural Analyses of Hydrated Crystals in Mixed Green Surfactant Systems: α‐Sulfonated Fatty Acid Methyl Ester Salt and Fatty Acid Soap Mixtures

α‐Sulfonated fatty acid methyl ester salts (MES), synthesized from renewable plant resources, are an example of green surfactants used in eco‐friendly washing detergents because of their excellent detergent properties, biodegradability, and enzyme stability. Although various physicochemical properties of MES crystals and micelles have been studied, mixed systems composed of MES and other surfactants have not been well studied. We investigated the crystalline structures of hydrated solids in mixed systems containing MES and soaps, which have been utilized as detergents, using small‐ and wide‐angle X‐ray scattering (SWAXS), differential scanning calorimetry (DSC), and Fourier transform infrared (FTIR) spectroscopy techniques. The minimum dissolution temperature, determined by visual observation, of a 4:1 M ratio of the sodium salt of α‐sulfonated palmitic acid methyl ester (C₁₆MES‐Na) and sodium palmitate (C₁₆‐Na), is indicative of a eutectic mixture. SWAXS measurements reveal that C₁₆MES‐Na and C₁₆‐Na crystals are formed separately in this system. Eutectic mixtures were also observed for the C₁₆MES‐Na/C₁₆MES‐K (α‐sulfonated palmitic acid methyl ester potassium salt) system and in the C₁₆MES‐K/C₁₆‐Na system. Furthermore, in addition to C₁₆MES‐K and C₁₆‐Na crystals, C₁₆MES‐Na crystals were also formed in the C₁₆MES‐K/C₁₆‐Na system, through counterion exchange during crystallization.