Novel dendrimers for papermaking applications

标题：用于造纸的新型树枝状大分子。树枝状大分子具有可调整的内部和表面结构，为设计与造纸悬浮液相互作用的新型材料提供了良好的机会。Kakkar教授的团队开发了一种简单的合成方法，可以构建各种球形和哑铃形的树枝状大分子。该合成使用自适应模板核心是灵活的，并且允许几代人的积累，而不需要在其间进行分离步骤，使得该过程简单且具有成本效益。这些树枝状大分子的外围含有羟基，可以很容易地使这些带有羧基、胺、磺酸盐、醛等实体的树枝状大分子官能化。这使得我们可以定制设计具有所需性能的树枝状大分子。有人建议将这些树枝状大分子应用于造纸悬浮液中，作为双组分助留系统的一部分或作为增强剂。这类助留剂的效率、成型过程中的滤水性和手纸的强度(湿纸幅、湿强度和干强度)将由许多技术决定，包括Van de Ven教授开发的新技术。对加拿大的潜在好处是在加拿大纸浆和造纸业引入新的产品线，包括定制的树枝状大分子和高度支化的聚合物。加拿大公司将首先被瞄准实施任何由这笔赠款产生的新技术，使它们相对于竞争对手具有竞争优势。

Title: Novel dendrimers for papermaking applications.Dendritic macromolecules with tailorable internal and surface structure offer excellent opportunities in designing novel materials for interactions with papermaking suspensions. Professor Kakkar's group has developed a simple synthetic methodology that allows the construction of a variety of globular and dumb-bell shaped dendrimers. The synthesis is flexible using an adaptive template core, and has allowed the build-up of several generations without separation steps in between, making the process easy and cost-effective. These dendrimers contain hydroxyl groups at their periphery that can be used to readily functionalize these dendrimers with entities including carboxyl, amine, sulfonate, aldehyde etc. This allows us to custom design these dendrimers with desired properties. It is proposed to apply these dendrimers to papermaking suspensions, either as part of a dual component retention aid system or as strength agents. The efficiency of such retention aids, the drainage during forming and the strength (wet web, wet and dry strength) of hand sheets will be determined by a number of techniques, including new ones developed by Prof, van de Ven.The potential benefits for Canada are the introduction of a new product lines in the Canadian Pulp and Paper Industry, consisting of tailor-made dendrimers and highly branched polymers. Canadian companies will be targeted first to implement any new technology arising from this grant, giving them a competitive edge over competitors.