We're sunsetting PodQuest on 2025-07-28. Thank you for your support!
Export Podcast Subscriptions
cover of episode Why do clothes shrink in the wash?

Why do clothes shrink in the wash?

2025/1/17
logo of podcast Moment of Um

Moment of Um
AI Deep Dive AI Chapters Transcript
People
M
Mark Lorch教授
Topics
Mark Lorch教授：我主要研究羊毛衣物在洗涤过程中缩水的原因。羊毛的本质是毛发，其纤维表面具有微小的鳞片状结构。当衣物在高温或剧烈洗涤、烘干的过程中，这些鳞片会相互缠绕、锁住，从而导致衣物缩水。这是一种物理现象，与纤维的机械特性有关。我们可以通过一个简单的实验来感受：取一根头发，用手指沿着一个方向捋，会感觉光滑；反方向捋，则会感觉粗糙，这就是因为头发表面有微小的鳞片。羊毛纤维也类似，高温或剧烈摩擦会使这些鳞片相互勾连，难以分离，最终导致衣物缩小。因此，为了避免衣物缩水，建议使用温和的洗涤方式，避免高温和剧烈摩擦。

Deep Dive

Shownotes Transcript

Have you ever noticed how sometimes when you wash and dry a piece of clothing, it comes out a little smaller? Why does that happen? We asked science professor Dr. Mark Lorch to help us find the answer.

Got a question that’s *tumbling *around your brain? Send it to us at BrainsOn.org/contact), and we won’t *shrink away *from answering it!