Understanding and controlling the behaviour of concentrated microgel dispersions

了解和控制浓缩微凝胶分散体的行为

• 批准号: 2064764
• 金额: --
• 依托单位: University of Leeds
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2017
• 资助国家: 英国
• 起止时间: 2017 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2064764
• 关键词: Understanding; controlling; behaviour; concentrated; microgel

The overall objective of the project is to understand and control the behaviour of concentrated microgel dispersions that are suitable for use and processing in food products, especially confectionery, and that use "trusted ingredients". Microgels behave like tiny particles of gel. In particular the key objectives of the research are to:-1. Synthesize model polymer-based microgel dispersions. 2. Test the effects of the microgels on the rheology (texture) of water and sugar solutions.3. Create biopolymer-based microgels dispersions for comparison with the synthetic microgels.4. Understand the rheology of both sets of microgels via the particle interactions between them.5. Test the findings in some systems of interest to the industrial food partner, to achieve better control of filling and deposition of such dispersions.The novel physical sciences methodology that will be carried out include:-a. Design of a procedure for up-scaled preparation of synthetic microgelsb. Development of novel preparation methods of biopolymer based microgels via reactive precipitation in high shear and/or low shear field, via microfluidization methods.c. Development of novel characterization protocols via freeze-drying of microgels, re-dispersion and dynamic light scattering and rheology measurements at high volume fractions of the dispersions.d. Development of processing protocols for incorporation and utilization of microgels in large scale production.

该项目的总体目标是了解和控制适合在食品中使用和加工的浓缩微凝胶分散体的行为，特别是糖果，并使用“可信成分”。微凝胶的行为就像凝胶的微小颗粒。特别是，研究的主要目标是：-1.合成模型聚合物微凝胶分散体。2.测试微凝胶对水和糖溶液的流变性(质构)的影响。创建基于生物聚合物的微凝胶分散体，以与合成的微凝胶进行比较。通过两组微凝胶之间的颗粒相互作用，了解它们的流变性。在工业食品合作伙伴感兴趣的一些系统中测试发现，以实现对此类分散体的填充和沉积的更好控制。将进行的新的物理科学方法学包括：合成微凝胶的规模化制备工艺设计。开发生物聚合物微凝胶的新制备方法，通过微流态化方法在高剪切场和/或低剪切场中进行反应沉淀。通过微凝胶的冷冻干燥、再分散和高体积分数分散体的动态光散射和流变学测量，开发新的表征方案。制定微凝胶在大规模生产中并入和使用的加工方案。