7 Comments
Feb 28, 2023Liked by Tony Maiorana

Ah, the "holy grail" of de-bonding on command. :) So many potential use cases for such feature...

Thanks for another quality article, Tony!

Expand full comment
Feb 28, 2023Liked by Tony Maiorana

I was in one of the rough back alley souks in Morocco and there are some people waiting outside a shop, and what this shop does is rip the sole off your sneaker, coat both sides with lighter fluid set them ablaze and then sandwich them back together. seemed to work.

it's all about looking Green, not one cares about the reality.

Expand full comment
author

Yeah, so bonding by remelting the existing adhesive. Issues here are that the repair shop should be using a "last" or the wooden/plastic foot that goes inside the shoe to get even pressure across the whole area.

Sometimes adhesives hydrolyze or degrade though. One of the worst things you can do is leave your gym shoes in your car when they are wet in the summer, and you just keep doing that all the time.

Expand full comment

This one is right in your wheelhouse and well written. I suspect that if Dow was chasing an award, it wouldn’t be for brand trust, but for an extra bullet in the ESG section for investors. WDYT?

Expand full comment
author

Maybe. They do sell quite a bit of polyurethane raw materials for midsole construction and have been trying to sell a polyethylene-based foam for years, but it hasn't worked out for them. What does one more award do for them really? Seems like they just got lazy to me.

Expand full comment

Not sure, but it’s probably someone in IR/PR’s responsibility to stack up awards, and I wouldn’t be surprised if laziness lies in those corners of the company. Unless you want to attribute the laziness to some other group / individual at the company?

Expand full comment

I stumbled across your post in Notes this morning. Interesting.

I know next to nothing about petroleum based polymers, but I've always been fascinated with the problems associated with their recycling. I'm sure to a chemist there is an obvious explanation, but I've never understood why, when these polymers are basically two, three maybe four base elements, those bonds can't be broken, and the base elements reconfigured.

In other words, (since I obviously have no idea of how it all works), why can't PET, PVC, HDPE, LDPE, PETE, PE, PP, PS ,..... be souped together and then refined out into what ever is desired? In other, other words, turn it all back into crude, and refine the sludge into something useful.

Expand full comment