权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Correlation between the binding and associative strength of modified PIBSA-based dispersants

改性 PIBSA 分散剂的结合强度和缔合强度之间的相关性

基本信息

批准号：
380532-2008
负责人：
Duhamel, Jean
金额：
$ 1.69万
依托单位：
University of Waterloo
依托单位国家：
加拿大
项目类别：
Collaborative Research and Development Grants
财政年份：
2011
资助国家：
加拿大
起止时间：
2011-01-01 至 2012-12-31
项目状态：
已结题

来源：
https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=484773
关键词：
Correlation between binding associative strength

项目摘要

This proposal is to characterize the associative and binding strength of a series of dispersants made from PIBSA. PIBSA are polyisobutylene chains (PIB) terminated at one end with succinic anhydride (SA). The PIBSA-based dispersants used by the oil-additive industry are obtained by reacting PIBSA with a polyamine. The PIB moiety of the dispersant likes the oil whereas the polyamine moiety does not. In the oil, the dispersants can either associate via their polyamine core into dispersant aggregates referred to as micelles, or bind onto carbon-rich particles generated by the engine. The polyamine core of the PIBSA-based dispersants will be modified with a cyclic carbonate or boric acid to further adjust their associative properties. The associative strength of the modified dispersants will be estimated from their critical micelle concentration determined by fluorescence measurements. Their binding onto carbon-rich particles will be described with a Langmuir isotherm. The competition existing between the association of the dispersants into micelles and their binding onto the polar surface of carbon-rich particles will be investigated. The correlation between the binding and associative strength of the dispersants will be established. The basic knowledge learned from these experiments will benefit Imperial Oil, a Canadian company selling PIBSA-based oil-additives used in oil formulations.

该提案旨在表征由 PIBSA 制成的一系列分散剂的缔合和结合强度。 PIBSA 是一端以琥珀酸酐 (SA) 封端的聚异丁烯链 (PIB)。石油添加剂工业中使用的PIBSA基分散剂是通过PIBSA与多胺反应获得的。分散剂的 PIB 部分喜欢油，而多胺部分则不喜欢油。在油中，分散剂可以通过其聚胺核心缔合成分散剂聚集体（称为胶束），或者结合到发动机产生的富碳颗粒上。基于 PIBSA 的分散剂的聚胺核心将用环状碳酸酯或硼酸进行改性，以进一步调整其缔合性能。改性分散剂的缔合强度将根据荧光测量确定的临界胶束浓度来估计。它们与富碳颗粒的结合将用朗缪尔等温线来描述。将研究分散剂与胶束的缔合和它们与富碳颗粒极性表面的结合之间存在的竞争。将建立分散剂的结合强度和缔合强度之间的相关性。从这些实验中学到的基本知识将使帝国石油公司受益，这是一家加拿大公司，销售用于石油配方的基于 PIBSA 的石油添加剂。