Awesome question OP, very interesting topic. First off, yes our student loans would be wiped out if we had hyperinflation as long as the interest rates on them are locked in, which I think they are. Whats really interesting is to read old threads on SDN about med students comparing banks and their student loan programs. The government has taken over the student loan industry so private banks are staying out of it. This just leads to higher tuition but thats another story.
As for low interest rates, that will help bring on hyperinflation. With rates at zero, the fed can print at borrow at no cost. However, all that money has to be liquidated in the market at some point. It's just a case of kicking the can down the road. The fed is more concerned with deflation right now bc a lot of pensions are tied into the stock market its crazy. My prediction, although really belonging to free market economists I follow, is that after the fed does QE 8, the money supply will have increased substantially that private industry will react and the market will drive interest rates up. How bad will it be? I don't know. Will the dollar survive? Will we refuse to pay off our creditors? Will there be trade wars? Ya know we had bad inflation in the late 70s. Interest rates hit over 20% in the early 80's I believe. We survived, but the difference was our debt and foreign obligations were a drop in the bucket compared to today. Crazy times. Okay thanks for reading, I find econ fascinating.